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https://www.readbyqxmd.com/read/29925585/ein3-like1-myb1-and-ethylene-response-factor3-act-in-a-regulatory-loop-that-synergistically-modulates-ethylene-biosynthesis-and-anthocyanin-accumulation
#1
Jian-Ping An, Xiao-Fei Wang, Yuan-Yuan Li, Lai-Qing Song, Ling-Ling Zhao, Chun-Xiang You, Yu-Jin Hao
Ethylene regulates climacteric fruit ripening, and EIN3-LIKE1 (EIL1) plays an important role in this process. In apple (Malus domestica), fruit coloration is accompanied by ethylene release during fruit ripening, but the molecular mechanism that underlies these two physiological processes is unknown. In this study, we found that ethylene treatment markedly induced fruit coloration as well as the expression of MdMYB1, a positive regulator of anthocyanin biosynthesis and fruit coloration. In addition, we found that MdEIL1 directly bound to the promoter of MdMYB1 and transcriptionally activated its expression, which resulted in anthocyanin biosynthesis and fruit coloration...
June 20, 2018: Plant Physiology
https://www.readbyqxmd.com/read/29897568/erf72-interacts-with-arf6-and-bzr1-to-regulate-hypocotyl-elongation-in-arabidopsis
#2
Kun Liu, Yihao Li, Xuena Chen, Lijuan Li, Kai Liu, Heping Zhao, Yingdian Wang, Shengcheng Han
The phytohormones brassinosteroid (BR), auxin, and gibberellin (GA) regulate photomorphogenesis-related hypocotyl elongation in Arabidopsis via the cooperative interaction of BZR-ARF-PIF/DELLA (BAP/D) transcription factors/regulators. Moreover, ethylene activates the PIF3 or ERF1 pathway through EIN3/EIL1 to balance hypocotyl elongation in Arabidopsis seedlings. However, how ethylene is coordinated with other phytohormones to ensure light-regulated hypocotyl growth remains elusive. Here, we found that hypocotyl cell elongation is regulated by a connection among ethylene, auxin, and BR signalling, which is mediated by interactions among ERF72, ARF6, and BZR1...
June 12, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29869796/ethylene-promotes-cadmium-induced-root-growth-inhibition-through-ein3-controlled-xth33-and-lsu1-expression-in-arabidopsis
#3
Xiangpei Kong, Cuiling Li, Feng Zhang, Qianqian Yu, Shan Gao, Maolin Zhang, Huiyu Tian, Jian Zhang, Xianzheng Yuan, Zhaojun Ding
Cadmium (Cd) stress is one of the most serious heavy metal stresses limiting plant growth and development. However, the molecular mechanisms underlying Cd-induced root growth inhibition remain unclear. Here, we found that ethylene signaling positively regulates Cd-induced root growth inhibition. Arabidopsis seedlings pretreated with the ethylene precursor 1-aminocyclopropane-1-carboxylic acid exhibited enhanced Cd-induced root growth inhibition; while the addition of the ethylene biosynthesis inhibitor aminoethoxyvinyl glycine decreased Cd-induced root growth inhibition...
June 5, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29844157/genome-wide-regulation-of-light-controlled-seedling-morphogenesis-by-three-families-of-transcription-factors
#4
Hui Shi, Mohan Lyu, Yiwen Luo, Shoucheng Liu, Yue Li, Hang He, Ning Wei, Xing Wang Deng, Shangwei Zhong
Three families of transcription factors have been reported to play key roles in light control of Arabidopsis seedling morphogenesis. Among them, bHLH protein PIFs and plant-specific protein EIN3/EIN3-LIKE 1 (EIN3/EIL1) accumulate in the dark to maintain skotomorphogenesis. On the other hand, HY5 and HY5 HOMOLOG (HYH), two related bZIP proteins, are stabilized in light and promote photomorphogenic development. To systemically investigate the transcriptional regulation of light-controlled seedling morphogenesis, we generated HY5 ox/ pifQein3eil1 , which contained mutations of EIN3/EIL1 and four PIF genes ( pifQein3eil1 ) and overexpression of HY5 Our results show that dark-grown HY5 ox/ pifQein3eil1 seedlings display a photomorphogenesis highly similar to that of wild-type seedlings grown in continuous light, with remarkably enhanced photomorphogenic phenotypes compared with the pifQ mutants...
May 29, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29807583/overexpression-of-an-ein3-binding-f-box-protein2-like-gene-caused-elongated-fruit-shape-and-delayed-fruit-development-and-ripening-in-tomato
#5
Xiaokun Guo, Yong Zhang, Yun Tu, Yongzhong Wang, Wenjing Cheng, Yingwu Yang
Ethylene signaling converges on the ETHYLENE-INSENSITIVE3 (EIN3)/EIN3-like (EIL) transcription factors to regulate a wide range of developmental processes in plants. EBF1/2 (EIN3-binding F-box protein 1 and 2) negatively regulate the ethylene signaling pathway by mediating the degradation of EIN3/EIL proteins. We uncovered previously that SlEBF1 and SlEBF2 are involved in ethylene response, plant senescence, and fruit ripening in tomato. The present study reports on the identification of a novel tomato F-box gene, designated as SlEBF2-like due that its encoded protein is greater similarity to SlEBF2...
July 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29797363/a-novel-tomato-f-box-protein-slebf3-is-involved-in-tuning-ethylene-signaling-during-plant-development-and-climacteric-fruit-ripening
#6
Heng Deng, Julien Pirrello, Yao Chen, Nan Li, Sihua Zhu, Ximena Chirinos, Mondher Bouzayen, Yongsheng Liu, Mingchun Liu
Ethylene is instrumental to climacteric fruit ripening and EIN3 BINDING F-BOX (EBF) proteins have been assigned a central role in mediating ethylene responses by regulating EIN3/EIL degradation in Arabidopsis. However, the role and mode of action of tomato EBFs in ethylene-dependent processes like fruit ripening remains unclear. Two novel EBF genes, SlEBF3 and SlEBF4, were identified in the tomato genome and SlEBF3 displayed a ripening-associated expression pattern suggesting its potential involvement in controlling ethylene response during fruit ripening...
May 23, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29758376/ethylene-signaling-cross-talk-with-other-hormones-in-arabidopsis-thaliana-exposed-to-contrasting-phosphate-availability-differential-effects-in-roots-leaves-and-fruits
#7
Sergi Munné-Bosch, Bárbara Simancas, Maren Müller
Ethylene signaling plays a major role in the regulation of plant growth, but its cross-talk with other phytohormones is still poorly understood. Here, we investigated whether or not a defect in ethylene signaling, particularly in the ETHYLENE INSENSITIVE3 (EIN3) transcription factor, alters plant growth and influences the contents of other phytohormones. With this aim, a hormonal profiling approach using ultrahigh performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) was used to unravel organ-specific responses (in roots, leaves and fruits) in the ein3-1 mutant and wild-type A...
May 4, 2018: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29738468/-cawrky40b-in-pepper-acts-as-a-negative-regulator-in-response-to-ralstonia-solanacearum-by-directly-modulating-defense-genes-including-cawrky40
#8
Muhammad Ifnan Khan, Yangwen Zhang, Zhiqin Liu, Jiong Hu, Cailing Liu, Sheng Yang, Ansar Hussain, Muhammad Furqan Ashraf, Ali Noman, Lei Shen, Xiaoqin Xia, Feng Yang, Deyi Guan, Shuilin He
WRKY transcription factors (TFs) have been implicated in plant growth, development, and in response to environmental cues; however, the function of the majority of pepper WRKY TFs remains unclear. In the present study, we functionally characterized CaWRKY40b , a homolog of AtWRKY40 , in pepper immunity. Ralstonia solanacearum inoculation (RSI) in pepper plants resulted in downregulation of CaWRKY40b transcript, and green fluorescent protein (GFP)-tagged CaWRKY40b was localized to the nuclei when transiently overexpressed in the leaves of Nicotiana benthamiana ...
May 8, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29675029/aaein3-mediates-the-downregulation-of-artemisinin-biosynthesis-by-ethylene-signaling-through-promoting-leaf-senescence-in-artemisia-annua
#9
Yueli Tang, Ling Li, Tingxiang Yan, Xueqing Fu, Pu Shi, Qian Shen, Xiaofen Sun, Kexuan Tang
Artemisinin is an important drug for malaria treatment, which is exclusively produced in Artemisia annua . It's important to dissect the regulatory mechanism of artemisinin biosynthesis by diverse plant hormones and transcription factors. Our study shows ethylene, a plant hormone which accelerates flower and leaf senescence and fruit ripening, suppressed the expression of genes encoding three key enzymes ADS, DBR2, CYP71AV1, and a positive regulator AaORA involved in artemisinin biosynthesis. Then we isolated the gene encoding ETHYLENE-INSENSITIVE3 (EIN3), a key transcription factor in ethylene signaling pathway, by screening the transcriptome and genome database from Artemisia annua , named AaEIN3 ...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29643073/the-plant-hormone-ethylene-restricts-arabidopsis-growth-via-the-epidermis
#10
Irina Ivanova Vaseva, Enas Qudeimat, Thomas Potuschak, Yunlong Du, Pascal Genschik, Filip Vandenbussche, Dominique Van Der Straeten
The gaseous hormone ethylene plays a key role in plant growth and development, and it is a major regulator of stress responses. It inhibits vegetative growth by restricting cell elongation, mainly through cross-talk with auxins. However, it remains unknown whether ethylene controls growth throughout all plant tissues or whether its signaling is confined to specific cell types. We employed a targeted expression approach to map the tissue site(s) of ethylene growth regulation. The ubiquitin E3 ligase complex containing Skp1, Cullin1, and the F-box protein EBF1 or EBF2 (SCFEBF1/2 ) target the degradation of EIN3, the master transcription factor in ethylene signaling...
April 24, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29593753/ethylene-related-gene-expression-networks-in-wood-formation
#11
Carolin Seyfferth, Bernard Wessels, Soile Jokipii-Lukkari, Björn Sundberg, Nicolas Delhomme, Judith Felten, Hannele Tuominen
Thickening of tree stems is the result of secondary growth, accomplished by the meristematic activity of the vascular cambium. Secondary growth of the stem entails developmental cascades resulting in the formation of secondary phloem outwards and secondary xylem (i.e., wood) inwards of the stem. Signaling and transcriptional reprogramming by the phytohormone ethylene modifies cambial growth and cell differentiation, but the molecular link between ethylene and secondary growth remains unknown. We addressed this shortcoming by analyzing expression profiles and co-expression networks of ethylene pathway genes using the AspWood transcriptome database which covers all stages of secondary growth in aspen ( Populus tremula ) stems...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29528636/integration-of-environmental-and-developmental-or-metabolic-control-of-seed-mass-by-sugar-and-ethylene-metabolisms-in-arabidopsis
#12
Lai-Sheng Meng, Meng-Ke Xu, Wen Wan, Jing-Yi Wang
In higher plants, seed mass is an important to evolutionary fitness. In this context, seedling establishment positively correlates with seed mass under conditions of environmental stress. Thus, seed mass constitutes an important agricultural trait. Here, we show loss-of-function of YODA (YDA), a MAPKK Kinase, and decreased seed mass, which leads to susceptibility to drought. Furthermore, we demonstrate that yda disrupts sugar metabolisms but not the gaseous plant hormone, ethylene. Our data suggest that the transcription factor EIN3 (ETHYLENE-INSENSITIVE3), integral to both sugar and ethylene metabolisms, physically interacts with YDA...
April 4, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29528503/ethylene-signaling-induces-gelatinous-layers-with-typical-features-of-tension-wood-in-hybrid-aspen
#13
Judith Felten, Jorma Vahala, Jonathan Love, András Gorzsás, Markus Rüggeberg, Nicolas Delhomme, Joanna Leśniewska, Jaakko Kangasjärvi, Torgeir R Hvidsten, Ewa J Mellerowicz, Björn Sundberg
The phytohormone ethylene impacts secondary stem growth in plants by stimulating cambial activity, xylem development and fiber over vessel formation. We report the effect of ethylene on secondary cell wall formation and the molecular connection between ethylene signaling and wood formation. We applied exogenous ethylene or its precursor 1-aminocyclopropane-1-carboxylic acid (ACC) to wild-type and ethylene-insensitive hybrid aspen trees (Populus tremula × tremuloides) and studied secondary cell wall anatomy, chemistry and ultrastructure...
May 2018: New Phytologist
https://www.readbyqxmd.com/read/29447166/a-molecular-basis-behind-heterophylly-in-an-amphibious-plant-ranunculus-trichophyllus
#14
Juhyun Kim, Youngsung Joo, Jinseul Kyung, Myeongjune Jeon, Jong Yoon Park, Ho Gyun Lee, Doo Soo Chung, Eunju Lee, Ilha Lee
Ranunculus trichophyllus is an amphibious plant that produces thin and cylindrical leaves if grown under water but thick and broad leaves if grown on land. We found that such heterophylly is widely controlled by two plant hormones, abscisic acid (ABA) and ethylene, which control terrestrial and aquatic leaf development respectively. Aquatic leaves produced higher levels of ethylene but lower levels of ABA than terrestrial leaves. In aquatic leaves, their distinct traits with narrow shape, lack of stomata, and reduced vessel development were caused by EIN3-mediated overactivation of abaxial genes, RtKANADIs, and accompanying with reductions of STOMAGEN and VASCULAR-RELATED NAC-DOMAIN7 (VDN7)...
February 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29431630/ethylene-signaling-modulates-cortical-microtubule-reassembly-in-response-to-salt-stress
#15
Liru Dou, KaiKai He, Takumi Higaki, Xiangfeng Wang, Tonglin Mao
Regulation of cortical microtubule reorganization is essential for plant cell survival under high salinity conditions. In response to salt stress, microtubules undergo rapid depolymerization followed by reassembly to form a new microtubule network that promotes cell survival; however, the upstream regulatory mechanisms for this recovery response are largely unknown. In this study, we demonstrate that ethylene signaling facilitates salt stress-induced reassembly of cortical microtubules in Arabidopsis ( Arabidopsis thaliana )...
March 2018: Plant Physiology
https://www.readbyqxmd.com/read/29324765/brassinosteroids-regulate-root-growth-by-controlling-reactive-oxygen-species-homeostasis-and-dual-effect-on-ethylene-synthesis-in-arabidopsis
#16
Bingsheng Lv, Huiyu Tian, Feng Zhang, Jiajia Liu, Songchong Lu, Mingyi Bai, Chuanyou Li, Zhaojun Ding
The brassinosteroids (BRs) represent a class of phytohormones, which regulate numerous aspects of growth and development. Here, a det2-9 mutant defective in BR synthesis was identified from an EMS mutant screening for defects in root length, and was used to investigate the role of BR in root development in Arabidopsis. The det2-9 mutant displays a short-root phenotype, which is result from the reduced cell number in root meristem and decreased cell size in root maturation zone. Ethylene synthesis is highly increased in the det2-9 mutant compared with the wild type, resulting in the hyper-accumulation of ethylene and the consequent inhibition of root growth...
January 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29259106/identification-of-transcriptional-and-receptor-networks-that-control-root-responses-to-ethylene
#17
Alexandria F Harkey, Justin M Watkins, Amy L Olex, Kathleen T DiNapoli, Daniel R Lewis, Jacquelyn S Fetrow, Brad M Binder, Gloria K Muday
Transcriptomic analyses with high temporal resolution provide substantial new insight into hormonal response networks. This study identified the kinetics of genome-wide transcript abundance changes in response to elevated levels of the plant hormone ethylene in roots from light-grown Arabidopsis ( Arabidopsis thaliana ) seedlings, which were overlaid on time-matched developmental changes. Functional annotation of clusters of transcripts with similar temporal patterns revealed rapidly induced clusters with known ethylene function and more slowly regulated clusters with novel predicted functions linked to root development...
March 2018: Plant Physiology
https://www.readbyqxmd.com/read/29250093/-xap5-circadian-timekeeper-positively-regulates-resistance-to-powdery-mildew8-1-mediated-immunity-in-arabidopsis
#18
Yong-Ju Xu, Yang Lei, Ran Li, Ling-Li Zhang, Zhi-Xue Zhao, Jing-Hao Zhao, Jing Fan, Yan Li, Hui Yang, Jing Shang, Shunyuan Xiao, Wen-Ming Wang
Ectopic expression of the Arabidopsis RESISTANCE TO POWDERY MILDEW8.1 ( RPW8.1 ) boosts pattern-triggered immunity leading to enhanced resistance to different pathogens in Arabidopsis and rice. However, the underlying regulatory mechanism remains largely elusive. Here, we report that XAP5 CIRCADIAN TIMEKEEPER ( XCT, At2g21150 ) positively regulates RPW8.1 -mediated cell death and disease resistance. Forward genetic screen identified the b3-17 mutant that exhibited less cell death and susceptibility to powdery mildew and bacterial pathogens...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29233944/ethylene-promotes-root-hair-growth-through-coordinated-ein3-eil1-and-rhd6-rsl1-activity-in-arabidopsis
#19
Ying Feng, Ping Xu, Bosheng Li, Pengpeng Li, Xing Wen, Fengying An, Yan Gong, Yi Xin, Ziqiang Zhu, Yichuan Wang, Hongwei Guo
Root hairs are an extensive structure of root epidermal cells and are critical for nutrient acquisition, soil anchorage, and environmental interactions in sessile plants. The phytohormone ethylene (ET) promotes root hair growth and also mediates the effects of different signals that stimulate hair cell development. However, the molecular basis of ET-induced root hair growth remains poorly understood. Here, we show that ET-activated transcription factor ETHYLENE-INSENSITIVE 3 (EIN3) physically interacts with ROOT HAIR DEFECTIVE 6 (RHD6), a well-documented positive regulator of hair cells, and that the two factors directly coactivate the hair length-determining gene RHD6-LIKE 4 ( RSL4 ) to promote root hair elongation...
December 26, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29114016/ein3-and-pif3-form-an-interdependent-module-that-represses-chloroplast-development-in-buried-seedlings
#20
Xiaoqin Liu, Renlu Liu, Yue Li, Xing Shen, Shangwei Zhong, Hui Shi
In buried seedlings, chloroplasts are arrested at the etioplast stage, but they rapidly mature upon emergence of the seedling. Etioplast-chloroplast differentiation is halted through the integration of soil-induced signals, including pressure and the absence of light, although the details on how this information converges to regulate cellular decisions remain unclear. Here, we identify an interdependent transcription module that integrates the mechanical pressure and darkness signals to control chloroplast development in Arabidopsis thaliana Mutations of ETHYLENE-INSENSITIVE3 (EIN3), the primary transcription factor in the ethylene signaling pathway that is activated in response to mechanical pressure, cause early development of etioplasts in the dark and severe photobleaching upon light exposure...
December 2017: Plant Cell
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