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https://www.readbyqxmd.com/read/28224250/abscisic-acid-sucrose-and-auxin-coordinately-regulate-berry-ripening-process-of-the-fujiminori-grape
#1
Haifeng Jia, Zhenqiang Xie, Chen Wang, Lingfei Shangguan, Ning Qian, Mengjie Cui, Zhongjie Liu, Ting Zheng, Mengqi Wang, Jinggui Fang
The aim of this study was to examine the effect of abscisic acid (ABA), sucrose, and auxin on grape fruit development and to assess the mechanism of these three factors on the grape fruit ripening process. Different concentrations of ABA, sucrose, and auxin were used to treat the grape fruit, and the ripening-related indices, such as physiological and molecular level parameters, were analyzed. The activity of BG protein activity was analyzed during the fruit development. Sucrose, ABA, and auxin influenced the grape fruit sugar accumulation in different ways, as well as the volatile compounds, anthocyanin content, and fruit firmness...
February 21, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28214729/improved-tolerance-to-transplanting-injury-and-chilling-stress-in-rice-seedlings-treated-with-orysastrobin
#2
Naoto Takahashi, Yukari Sunohara, Masami Fujiwara, Hiroshi Matsumoto
In addition to their fungicidal activity, strobilurin-type fungicides are reported to show enhancing effects on crop growth and yield. Previous studies suggested that the fungicide has a mitigating effect on abiotic stresses. However, there are few reports about growth enhancement through abiotic stress alleviation by strobilurin-type fungicides, but the mechanism of action of the growth enhancement is still not clear. The present study revealed that orysastrobin enhanced rice seedling growth after root cutting injury and chilling stress...
February 7, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28214444/the-boosted-biomass-and-lipid-accumulation-in-chlorella-vulgaris-by-supplementation-of-synthetic-phytohormone-analogs
#3
Tingting Liu, Fei Liu, Chao Wang, Zhenyao Wang, Yuqin Li
This study attempted at maximizing biomass and lipid accumulation in Chlorella vulgaris by supplementation of natural abscisic acid (ABA) or synthetic 2,4-dichlorophenoxyacetic acid (2,4-D) and 1-naphthaleneacetic acid (NAA) hormone analogs. Amongst three tested additives, NAA-treatment performed remarkable promoting effect on cell growth and lipid biosynthesis. The favorable lipid productivity (418.6mg/L/d) of NAA-treated cells showed 1.48 and 2.24 times more than that of 2,4-D and ABA. NAA-treatment also positively modified the proportions of saturated (C16:0 and C18:0) and monounsaturated fatty acids (C18:1) which were prone to high-quality biofuels-making...
February 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28212614/transcriptomic-profiling-provides-molecular-insights-into-hydrogen-peroxide-induced-adventitious-rooting-in-mung-bean-seedlings
#4
Shi-Weng Li, Yan Leng, Rui-Fang Shi
BACKGROUND: Hydrogen peroxide (H2O2) has been known to function as a signalling molecule involved in the modulation of various physiological processes in plants. H2O2 has been shown to act as a promoter during adventitious root formation in hypocotyl cuttings. In this study, RNA-Seq was performed to reveal the molecular mechanisms underlying H2O2-induced adventitious rooting. RESULTS: RNA-Seq data revealed that H2O2 treatment greatly increased the numbers of clean reads and expressed genes and abundance of gene expression relative to the water treatment...
February 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28211480/visualisation-of-abscisic-acid-and-12-oxo-phytodienoic-acid-in-immature-phaseolus-vulgaris-l-seeds-using-desorption-electrospray-ionisation-imaging-mass-spectrometry
#5
Hirofumi Enomoto, Takuya Sensu, Kei Sato, Futoshi Sato, Thanai Paxton, Emi Yumoto, Koji Miyamoto, Masashi Asahina, Takao Yokota, Hisakazu Yamane
The plant hormone abscisic acid (ABA) and the jasmonic acid related-compound 12-oxo-phytodienoic acid (OPDA) play crucial roles in seed development, dormancy, and germination. However, a lack of suitable techniques for visualising plant hormones has restricted the investigation of their biological mechanisms. In the present study, desorption electrospray ionisation-imaging mass spectrometry (DESI-IMS), a powerful tool for visualising metabolites in biological tissues, was used to visualise ABA and OPDA in immature Phaseolus vulgaris L...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28198429/dynamic-changes-in-the-transcriptome-of-populus-hopeiensis-in-response-to-abscisic-acid
#6
Zhong Chen, Lexiang Ji, Jia Wang, Jinpu Jin, Xiaoyu Yang, Pian Rao, Kai Gao, Weihua Liao, Meixia Ye, Xinmin An
Abscisic acid (ABA) plays a fundamental role in plant response and adaptation to abiotic stresses, such as drought, high salinity and low temperature. Populus hopeiensis exhibits exceptional tolerance to water-deficit environments and is therefore an excellent choice for studying drought tolerance in trees. This study provides a global view of transcriptome dynamics in P. hopeiensis in response to exogenous ABA using Illumina RNA-sequencing. Endogenous ABA content increased and reached a peak at 8 h after ABA treatment and then significantly decreased at latter time points...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28198417/chilling-affects-phytohormone-and-post-embryonic-development-pathways-during-bud-break-and-fruit-set-in-apple-malus-domestica-borkh
#7
Gulshan Kumar, Khushboo Gupta, Shivalika Pathania, Mohit Kumar Swarnkar, Usha Kumari Rattan, Gagandeep Singh, Ram Kumar Sharma, Anil Kumar Singh
The availability of sufficient chilling during bud dormancy plays an important role in the subsequent yield and quality of apple fruit, whereas, insufficient chilling availability negatively impacts the apple production. The transcriptome profiling during bud dormancy release and initial fruit set under low and high chill conditions was performed using RNA-seq. The comparative high number of differentially expressed genes during bud break and fruit set under high chill condition indicates that chilling availability was associated with transcriptional reorganization...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197916/regulation-of-plant-cellular-and-organismal-development-by-sumo
#8
Nabil Elrouby
This chapter clearly demonstrates the breadth and spectrum of the processes that SUMO regulates during plant development. The gross phenotypes observed in mutants of the SUMO conjugation and deconjugation enzymes reflect these essential roles, and detailed analyses of these mutants under different growth conditions revealed roles in biotic and abiotic stress responses, phosphate starvation, nitrate and sulphur metabolism, freezing and drought tolerance and response to excess copper. SUMO functions also intersect with those regulated by several hormones such as salicylic acid , abscisic acid , gibberellins and auxin, and detailed studies provide mechanistic clues of how sumoylation may regulate these processes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28197165/prevention-of-preharvest-sprouting-through-hormone-engineering-and-germination-recovery-by-chemical-biology
#9
Mariko Nonogaki, Hiroyuki Nonogaki
Vivipary, germination of seeds on the maternal plant, is observed in nature and provides ecological advantages in certain wild species, such as mangroves. However, precocious seed germination in agricultural species, such as preharvest sprouting (PHS) in cereals, is a serious issue for food security. PHS reduces grain quality and causes economical losses to farmers. PHS can be prevented by translating the basic knowledge of hormone biology in seeds into technologies. Biosynthesis of abscisic acid (ABA), which is an essential hormone for seed dormancy, can be engineered to enhance dormancy and prevent PHS...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28193765/a-novel-chemical-inhibitor-of-aba-signaling-targets-all-aba-receptors
#10
Ya-Jin Ye, Lijuan Zhou, Xue Liu, Hao Liu, Deqiang Li, Minjie Cao, Haifeng Chen, Lin Xu, Jiankang Zhu, Yang Zhao
Abscisic acid (ABA), the most important stress-induced phytohormone, regulates seed dormancy, germination, plant senescence and abiotic stress response. ABA signaling is repressed by protein phosphatases 2C (PP2Cs), then ABA binds to its receptor of the PYR/PYL/RCAR family, which in turn inhibits PP2Cs and activates downstream ABA signaling. The agonist/antagonist of ABA receptors have the potential to unveil the ABA signaling machinery and to become lead compounds for agrochemicals, however, up to now, no broad-spectrum antagonists of ABA receptors blocking all PYR/PYL-PP2C interactions have been identified...
February 13, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28188272/aldehyde-oxidase-4-plays-a-critical-role-in-delaying-silique-senescence-by-catalyzing-aldehyde-detoxification
#11
Sudhakar Srivastava, Galina Brychkova, Dmitry Yarmolinsky, Aigerim Soltabayeva, Talya Samani, Moshe Sagi
The Arabidopsis aldehyde oxidases are a multigene family of four AAOs (1-4) that oxidize a variety of aldehydes, amongst them abscisic aldehyde, which is oxidized to the phytohormone abscisic acid.Toxic aldehydes are generated in plants both under normal conditions and in response to stress.The detoxification of such aldehydes by oxidation is attributed to aldehyde dehydrogenases but never to aldehyde oxidases. The feasibility of detoxification of aldehydes in siliques via oxidation by AAO4 was demonstrated, first, by its ability to efficiently oxidize an array of aromatic and aliphatic aldehydes, including the reactive carbonyl species (RCS) acrolein, hydroxyl-2-nonenal, and malondialdehyde (MDA)...
February 10, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28186676/acc-deaminase-containing-plant-growth-promoting-rhizobacteria-protect-papaver-somniferum-from-downy-mildew
#12
Deepti Barnawal, Shiv Shanker Pandey, Nidhi Bharti, Alok Pandey, Tania Ray, Sucheta Singh, Chandan Singh Chanotiya, Alok Kalra
AIMS: The aim of this study was to determine whether ACC deaminase-containing bacterial treatments could enhance the tolerance of poppy (Papaver somniferum L.) plants against biotic stress of downy mildew caused by Peronospora spp. METHODS AND RESULTS: Three different genotypes of P. somniferum i.e. Sampada, J-16 and I-14 were included in the experiment. The ACC deaminase-containing bacteria Pseudomonas putida (WPTe) reduced the downy mildew disease severity and significantly improved the growth and yield of P...
February 10, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28186193/genome-wide-identification-of-the-tify-gene-family-in-three-cultivated-gossypium-species-and-the-expression-of-jaz-genes
#13
Quan Sun, Guanghao Wang, Xiao Zhang, Xiangrui Zhang, Peng Qiao, Lu Long, Youlu Yuan, Yingfan Cai
TIFY proteins are plant-specific proteins containing TIFY, JAZ, PPD and ZML subfamilies. A total of 50, 54 and 28 members of the TIFY gene family in three cultivated cotton species-Gossypium hirsutum, Gossypium barbadense and Gossypium arboretum-were identified, respectively. The results of phylogenetic analysis showed that these TIFY genes were divided into eight clusters. The different clusters of gene family members often have similar gene structures, including the number of exons. The results of quantitative reverse transcription polymerase chain reaction (qRT-PCR) showed that different JAZ genes displayed distinct expression patterns in the leaves of upland cotton under treatment with Gibberellin (GA), methyl jasmonate (MeJA), Jasmonic acid (JA) and abscisic acid (ABA)...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28184233/overexpression-of-the-novel-arabidopsis-gene-at5g02890-alters-inflorescence-stem-wax-composition-and-affects-phytohormone-homeostasis
#14
Liping Xu, Viktoria Zeisler, Lukas Schreiber, Jie Gao, Kaining Hu, Jing Wen, Bin Yi, Jinxiong Shen, Chaozhi Ma, Jinxing Tu, Tingdong Fu
The cuticle is composed of cutin and cuticular wax. It covers the surfaces of land plants and protects them against environmental damage. At5g02890 encodes a novel protein in Arabidopsis thaliana. In the current study, protein sequence analysis showed that At5g02890 is highly conserved in the Brassicaceae. Arabidopsis lines overexpressing At5g02890 (OE-At5g02890 lines) and an At5g02890 orthologous gene from Brassica napus (OE-Bn1 lines) exhibited glossy stems. Chemical analysis revealed that overexpression of At5g02890 caused significant reductions in the levels of wax components longer than 28 carbons (C28) in inflorescence stems, whereas the levels of wax molecules of chain length C28 or shorter were significantly increased...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28184229/bnsip1-1-a-trihelix-family-gene-mediates-abiotic-stress-tolerance-and-aba-signaling-in-brassica-napus
#15
Junling Luo, Shaohua Tang, Fengling Mei, Xiaojue Peng, Jun Li, Xiaofei Li, Xiaohong Yan, Xinhua Zeng, Fang Liu, Yuhua Wu, Gang Wu
The trihelix family genes have important functions in light-relevant and other developmental processes, but their roles in response to adverse environment are largely unclear. In this study, we identified a new gene, BnSIP1-1, which fell in the SIP1 (6b INTERACTING PROTEIN1) clade of the trihelix family with two trihelix DNA binding domains and a fourth amphipathic α-helix. BnSIP1-1 protein specifically targeted to the nucleus, and its expression can be induced by abscisic acid (ABA) and different stresses...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28184010/the-pepper-ring-type-e3-ligase-caairf1-regulates-the-aba-and-drought-signaling-via-caadip1-protein-phosphatase-degradation
#16
Chae Woo Lim, Woonhee Baek, Sung Chul Lee
Ubiquitin-mediated protein modification occurs at multiple steps of abscisic acid (ABA) signaling. Here, we sought proteins responsible for degradation of the pepper type 2C protein phosphatase CaADIP1 via the 26S proteasome system. We showed that the RING type E3 ligase CaAIRF1 (Capsicum annuum ADIP1 Interacting RING Finger Protein 1) interacts with and ubiquitinates CaADIP1. CaADIP1 degradation was slower in crude proteins from CaAIRF1-silenced peppers than in those from control plants. CaAIRF1-silenced pepper plants displayed reduced ABA sensitivity and decreased drought tolerance characterized by delayed stomatal closure and suppressed induction of ABA- and drought-responsive marker genes...
February 9, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28183294/chloroplast-proteome-response-to-drought-stress-and-recovery-in-tomato-solanum-lycopersicum-l
#17
Rachele Tamburino, Monica Vitale, Alessandra Ruggiero, Mauro Sassi, Lorenza Sannino, Simona Arena, Antonello Costa, Giorgia Batelli, Nicola Zambrano, Andrea Scaloni, Stefania Grillo, Nunzia Scotti
BACKGROUND: Drought is a major constraint for plant growth and crop productivity that is receiving an increased attention due to global climate changes. Chloroplasts act as environmental sensors, however, only partial information is available on stress-induced mechanisms within plastids. Here, we investigated the chloroplast response to a severe drought treatment and a subsequent recovery cycle in tomato through physiological, metabolite and proteomic analyses. RESULTS: Under stress conditions, tomato plants showed stunted growth, and elevated levels of proline, abscisic acid (ABA) and late embryogenesis abundant gene transcript...
February 10, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28182683/a-mathematical-model-of-the-interaction-of-abscisic-acid-ethylene-and-methyl-jasmonate-on-stomatal-closure-in-plants
#18
Allen Lamarca Nazareno, Bryan Sapon Hernandez
Stomatal closure is affected by various stimuli such as light, atmospheric carbon dioxide concentration, humidity and phytohormones. Our research focuses on phytohormones, specifically: abscisic acid (ABA), ethylene (ET) and methyl jasmonate (MeJA) that are responsible for the regulation of several plant processes, especially in guard cell signalling. While several studies show that these three phytohormones cause stomatal closure in plants, only two studies are notable for establishing a mathematical model of guard cell signalling involving phytohormones...
2017: PloS One
https://www.readbyqxmd.com/read/28178573/enhancement-of-cold-and-salt-tolerance-of-arabidopsis-by-transgenic-expression-of-the-s-adenosylmethionine-decarboxylase-gene-from-leymus-chinensis
#19
Zhujiang Liu, Panpan Liu, Dongmei Qi, Xianjun Peng, Gongshe Liu
Leymus chinensis is an important perennial forage grass natively distributed in the Eurasian Steppe. However, little is known about the molecular mechanism of its adaptation to extreme environmental conditions. Based on L. chinensis cold-treated sequence database, a highly expressed S-adenosylmethionine decarboxylase gene (LcSAMDC1) was isolated from L. chinensis. Gene structure analysis showed that LcSAMDC1 has two introns and three exons as well as three non-overlapping ORFs in its mRNA sequence. One hour of cold exposure caused a significant up-regulation of LcSAMDC1, while abscisic acid (ABA), salt, and osmotic stresses slightly induced its expression...
January 19, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28174579/overexpression-of-mpcys4-a-phytocystatin-gene-from-malus-prunifolia-willd-borkh-enhances-stomatal-closure-to-confer-drought-tolerance-in-transgenic-arabidopsis-and-apple
#20
Yanxiao Tan, Mingjun Li, Yingli Yang, Xun Sun, Na Wang, Bowen Liang, Fengwang Ma
Phytocystatins (PhyCys) comprise a group of inhibitors for cysteine proteinases in plants. They play a wide range of important roles in regulating endogenous processes and protecting plants against various environmental stresses, but the underlying mechanisms remain largely unknown. Here, we detailed the biological functions of MpCYS4, a member of cystatin genes isolated from Malus prunifolia. This gene was activated under water deficit, heat (40°C), exogenous abscisic acid (ABA), or methyl viologen (MV) (Tan et al...
2017: Frontiers in Plant Science
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