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https://www.readbyqxmd.com/read/29340785/nitric-oxide-acts-downstream-of-abscisic-acid-in-molybdenum-induced-oxidative-tolerance-in-wheat
#1
Songwei Wu, Chengxiao Hu, Qiling Tan, Xiaohu Zhao, Shoujun Xu, Yitao Xia, Xuecheng Sun
Our study first reveals that Mo mediates oxidative tolerance through ABA signaling. Moreover, NO acts downstream of ABA signaling in Mo-induced oxidative tolerance in wheat under drought stress. Nitric oxide (NO) is related to the improvement of molybdenum (Mo)-induced oxidative tolerance. While the function of Mo in abscisic acid (ABA) synthesis and in mediating oxidative tolerance by the interaction of ABA and NO remain to be studied. The -Mo and +Mo treatment-cultivated wheat was separated and subsequently was pretreated with AO inhibitor, ABA synthesis inhibitor, exogenous ABA, NO scavenger, NO donor or their combinations under polyethylene glycol 6000 (PEG)-stimulated drought stress (PSD)...
January 16, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29340606/leaves-not-roots-or-floral-tissue-are-the-main-site-of-rapid-external-pressure-induced-aba-biosynthesis-in-angiosperms
#2
Feng-Ping Zhang, Frances Sussmilch, David S Nichols, Amanda A Cardoso, Timothy J Brodribb, Scott A M McAdam
Rapid biosynthesis of abscisic acid (ABA) in the leaf, triggered by a decrease in cell volume, is essential for a functional stomatal response to vapour pressure deficit (VPD) in angiosperms. However, it is not known whether rapid biosynthesis of ABA is triggered in other plant tissues as well. Through the application of external pressure to flower, root and leaf tissues, we test whether a reduction in cell volume can trigger rapid increases in ABA levels across plant body in two species Solanum lycopersicum and Passiflora tarminiana...
January 11, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29338040/identification-and-expression-analyses-of-wrky-genes-reveal-their-involvement-in-growth-and-abiotic-stress-response-in-watermelon-citrullus-lanatus
#3
Xiaozhen Yang, Hao Li, Yongchao Yang, Yongqi Wang, Yanling Mo, Ruimin Zhang, Yong Zhang, Jianxiang Ma, Chunhua Wei, Xian Zhang
Despite identification of WRKY family genes in numerous plant species, a little is known about WRKY genes in watermelon, one of the most economically important fruit crops around the world. Here, we identified a total of 63 putative WRKY genes in watermelon and classified them into three major groups (I-III) and five subgroups (IIa-IIe) in group II. The structure analysis indicated that ClWRKYs with different WRKY domains or motifs may play different roles by regulating respective target genes. The expressions of ClWRKYs in different tissues indicate that they are involved in various tissue growth and development...
2018: PloS One
https://www.readbyqxmd.com/read/29335788/over-expression-of-a-grafting-responsive-gene-from-hickory-increases-abiotic-stress-tolerance-in-arabidopsis
#4
R M Saravana Kumar, Guocun Ji, Haipeng Guo, Liang Zhao, Bingsong Zheng
A grafting response gene CcPIP1;2 was cloned from hickory plant, further functional characterization of the gene for water transport activity and abiotic stress tolerances were carried out through heterologous expression in Xenopus and Arabidopsis. Plasma membrane intrinsic proteins (PIPs) are multifunctional channel proteins belonging to the membrane intrinsic protein (MIP) family. In this study, a grafting-responsive gene from hickory (CcPIP1;2) was cloned and functionally characterized. Application of non-selective water inhibitors (HgCl2 and phloretin) led to the death of grafted hickory plants at 30 days after grafting (DAG)...
January 15, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29335785/heterologous-expression-of-rice-9-cis-epoxycarotenoid-dioxygenase-4-osnced4-in-arabidopsis-confers-sugar-oversensitivity-and-drought-tolerance
#5
San-Gwang Hwang, Chia-Yun Lee, Ching-Shan Tseng
BACKGROUND: The 9-cis-epoxycarotenoid dioxygenases OsNCED4 was cloned from rice in conjunction with OsNCED 1-3 and 5, of which 3 has been shown to function in ABA biosynthesis and alteration of leaf morphology. In higher plants, NCEDs have been shown to be key enzymes controlling ABA biosynthesis and belong to a differentially expressed gene family. Aside from OsNCED3, it remains largely unknown if other OsNCED genes are involved in ABA biosynthesis in rice. Thus, transgenic Arabidopsis plants overexpressing OsNCED4 were generated in the 129B08/nced3 mutant background to explore OsNCED4 function in ABA biosynthesis...
January 15, 2018: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29335506/transcriptome-profiling-during-mangrove-viviparity-in-response-to-abscisic-acid
#6
Liwei Hong, Wenyue Su, Yuanye Zhang, Congting Ye, Yingjia Shen, Qingshun Q Li
Mangrove plants adapt to coastal tidal mudflats with specially evolved viviparity seed development. However, very little is known about the genetic and molecular mechanisms of mangrove viviparity. Here, we tested a hypothesis that plant hormone abscisic acid (ABA) plays a significant role in precocious germination of viviparous Kandelia obovata seeds by exogenous applications. Through transcriptome analysis of ABA treated seeds, it was found that ABA repressed mangrove fruit growth and development, and there were thousands of genes differentially expressed...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29331924/gene-expression-patterns-regulating-the-seed-metabolism-in-relation-to-deterioration-ageing-of-primed-mung-bean-vigna-radiata-l-seeds
#7
Satyendra Nath Sharma, Ankita Maheshwari, Chitra Sharma, Nidhi Shukla
We are proposing mechanisms to account for the loss of viability (seed deterioration/ageing) and enhancement in seed quality (post-storage priming treatment). In order to understand the regulatory mechanism of these traits, we conducted controlled deterioration (CD) test for up to 8 d using primed mung bean seeds and examined how CD effects the expression of many genes, regulating the seed metabolism in relation to CD and priming. Germination declined progressively with increased duration of CD, and the priming treatment completely/partially reversed the inhibition depending on the duration of CD...
January 5, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29329458/three-fatty-acyl-coenzyme-a-reductases-bdfar1-bdfar2-and-bdfar3-are-involved-in-primary-alcohols-biosynthesis-of-cuticular-wax-in-brachypodium-distachyon
#8
Yong Wang, Yulin Sun, Qiuye You, Wenqiao Luo, Cong Wang, Shuai Zhao, Guaiqiang Chai, Tingting Li, Xue Shi, Chunlian Li, Reinhard Jetter, Zhonghua Wang
Plant cuticular wax is a heterogeneous mixture of very-long-chain fatty acids (VLCFAs) and their derivatives. Primary alcohols are the dominant wax components throughout leaf development of Brachypodium distachyon (Brachypodium). However, the genes involved in primary alcohols biosynthesis have not been investigated and their exact biological function remains currently unclear in Brachypodium to date. Here, we monitored the leaf wax profile and crystal morphology during Brachypodium leaf morphogenesis, and isolated three Brachypodium fatty acyl-CoA reductase (FAR) genes, named BdFAR1, BdFAR2 and BdFAR3, then analyzed their biochemical activities, substrate specificities, expression patterns, subcellular localization, and stress induction...
January 9, 2018: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29327440/a-maize-phytochrome-interacting-factors-protein-zmpif1-enhances-drought-tolerance-by-inducing-stomatal-closure-and-improves-grain-yield-in-oryza-sativa
#9
Yong Gao, Meiqin Wu, Mengjiao Zhang, Wei Jiang, Xiaoyun Ren, Enxing Liang, Dongping Zhang, Changquan Zhang, Ning Xiao, Yan Li, Yi Dai, Jianmin Chen
Phytochrome-interacting factors (PIFs) play major roles in regulating plant growth and development, but their roles in drought stress remain elusive. Here, we cloned and characterized a maize (Zea mays) PIF transcription factor, ZmPIF1. The expression level of ZmPIF1 was significantly induced by independent drought and abscisic acid (ABA) treatments. The ZmPIF1 transgenic rice and Arabidopsis displayed water-saving and drought-resistance, which were associated with reduced a stomatal aperture and transpiration rate...
January 11, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29327227/structural-characterization-of-a-novel-full-length-transcript-promoter-from-horseradish-latent-virus-hrlv-and-its-transcriptional-regulation-by-multiple-stress-responsive-transcription-factors
#10
Ahamed Khan, Ankita Shrestha, Kashyap Bhuyan, Indu B Maiti, Nrisingha Dey
The promoter fragment described in this study can be employed for strong transgene expression under both biotic and abiotic stress conditions. Plant-infecting Caulimoviruses have evolved multiple regulatory mechanisms to address various environmental stimuli during the course of evolution. One such mechanism involves the retention of discrete stress responsive cis-elements which are required for their survival and host-specificity. Here we describe the characterization of a novel Caulimoviral promoter isolated from Horseradish Latent Virus (HRLV) and its regulation by multiple stress responsive Transcription factors (TFs) namely DREB1, AREB1 and TGA1a...
January 11, 2018: Plant Molecular Biology
https://www.readbyqxmd.com/read/29318840/-application-of-remote-sensing-and-gis-in-study-of-suitability-distribution-of-swertia-mussotii-a-tibetan-medicine-in-sichuan-province
#11
Yong-Bo Dong, Yao Luo, Cong Zhu, Wen-Fu Peng, Xin-Liang Xu, Qing-Mao Fang
Swertia mussotii is a kind of rare medicinal materials, the relevant researches are mainly concentrated on its medicinal efficacy and medicinal value till now, researches of adaptive distribution by applying remote sensing and GIS are relatively less. This study is to analyze the adaptive distribution of S.mussotii in Sichuan province by applying remote sensing and GIS technology, and provide scientific basis for the protection and development of wild resources, artificial cultivation and adjustment of Chinese medicine industrial distribution in Sichuan province...
November 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29318839/-research-on-suitable-distribution-of-paris-yunnanensis-based-on-remote-sensing-and-gis
#12
Yao Luo, Yong-Bo Dong, Cong Zhu, Wen-Fu Peng, Qing-Mao Fang, Xin-Liang Xu
Paris yunnanensis is a kind of rare medicinal herb, having a very high medicinal value. Studying its suitable ecological condition can provide a basis for its rational exploitation, artificial cultivation, and sustainable utilization. A practicable method in this paper has been proposed to research the suitable regional distribution of P. yunnanensis in Sichuan province. By the case study of P. yunnanensis in Sichuan province, and according to related literatures, the suitable ecological condition of P. yunnanensis such as altitude, mean annual temperature (MAT), annual precipitation, regional slope, slope ranges, vegetative cover, and soil types was analyzed following remote sensing (RS) and GIS...
November 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29317286/the-a-enth-domain-containing-protein-ateca4-is-an-adaptor-protein-involved-in-cargo-recycling-from-the-trans-golgi-network-early-endosome-to-the-plasma-membrane
#13
Hong Hanh Nguyen, Myoung Hui Lee, Kyungyoung Song, Gyeongik Ahn, Jihyeong Lee, Inhwan Hwang
Endocytosis and subsequent trafficking pathways are crucial for regulating the activity of plasma membrane-localized proteins. Depending on cellular and physiological conditions, the internalized cargoes are sorted at (and transported from) the trans-Golgi network/early endosome (TGN/EE) to the vacuole for degradation or recycled back to the plasma membrane. How this occurs at the molecular level remains largely elusive. Here we provide evidence that the ENTH domain-containing protein AtECA4 plays a crucial role in recycling cargoes from the TGN/EE to the plasma membrane...
January 6, 2018: Molecular Plant
https://www.readbyqxmd.com/read/29316004/comparison-of-intubation-conditions-with-cmac-miller-videolaryngoscope-and-conventional-miller-laryngoscope-in-lateral-position-in-infants-a-prospective-randomized-trial
#14
Divya Jain, Swati Mehta, Komal Gandhi, Suman Arora, Badal Parikh, Muneer Abas
BACKGROUND: Endotracheal intubation in lateral position in infants is a challenge. This difficulty may be surmounted to some extent by using videolaryngoscopes but the routine use of these devices as a tool to secure the airway in lateral position remains unevaluated. Therefore, we conducted a prospective, randomized controlled trial to compare the intubation conditions achieved with the CMAC videolaryngoscope and the Miller Laryngoscope in lateral position in infants. We hypothesized that CMAC videolaryngoscope would provide a better laryngoscopic view and reduce the time to intubation compared to the Miller blade...
January 9, 2018: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/29315977/maize-w3-disrupts-homogentisate-solanesyl-transferase%C3%A2-zmhst-and-reveals-a-plastoquinone-9-independent-path-for-phytoene-desaturation-and-tocopherol-accumulation-in-kernels
#15
Charles T Hunter, Jonathan W Saunders, Maria Magallanes-Lundback, Shawn A Christensen, Denis Willett, Philip S Stinard, Qin-Bao Li, Kwanghee Lee, Dean DellaPenna, Karen E Koch
Maize white seedling 3 (w3) has been used to study carotenoid deficiency for almost 100 years, although the molecular basis of the mutation has remained unknown. Here we show that the w3 phenotype is caused by disruption of the maize gene for homogentisate solanesyl transferase (HST), which catalyzes the first and committed step in plastoquinone-9 (PQ-9) biosynthesis in the plastid. The resulting PQ-9 deficiency prohibits photosynthetic electron transfer and eliminates PQ-9 as an oxidant in the enzymatic desaturation of phytoene during carotenoid synthesis...
January 8, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29315972/differential-induction-of-polar-and-non-polar-metabolism-during-wound-induced-suberization-in-potato-solanum-tuberosum-l-tubers
#16
Kathlyn N Woolfson, Meghan L Haggitt, Yanni Zhang, Alexandra Kachura, Anica Bjelica, M Alejandra Rey Rincon, Karina M Kaberi, Mark A Bernards
Wound-induced suberin deposition involves the temporal and spatial coordination of phenolic and fatty acid metabolism. Phenolic metabolism leads to both soluble metabolites that accumulate as defense compounds as well as hydroxycinnamoyl derivatives that form the basis of the poly(phenolic) domain found in suberized tissue. Fatty acid metabolism involves the biosynthesis of very long chain fatty acids, 1-alkanols, ω-hydroxy fatty acids and α,ω-dioic acids that form a poly(aliphatic) domain, commonly referred to as suberin...
January 8, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29313187/allelic-variants-of-ossub1a-cause-differential-expression-of-transcription-factor-genes-in-response-to-submergence-in-rice
#17
Niharika Sharma, Trang Minh Dang, Namrata Singh, Slobodan Ruzicic, Bernd Mueller-Roeber, Ute Baumann, Sigrid Heuer
BACKGROUND: Flooding during seasonal monsoons affects millions of hectares of rice-cultivated areas across Asia. Submerged rice plants die within a week due to lack of oxygen, light and excessive elongation growth to escape the water. Submergence tolerance was first reported in an aus-type rice landrace, FR13A, and the ethylene-responsive transcription factor (TF) gene SUB1A-1 was identified as the major tolerance gene. Intolerant rice varieties generally lack the SUB1A gene but some intermediate tolerant varieties, such as IR64, carry the allelic variant SUB1A-2...
January 8, 2018: Rice
https://www.readbyqxmd.com/read/29311497/the-effects-of-abscisic-acid-salicylic-acid-and-jasmonic-acid-on-lipid-accumulation-in-two-freshwater-chlorella-strains
#18
Guanxun Wu, Zhengquan Gao, Huanmin Du, Bin Lin, Yuchen Yan, Guoqiang Li, Yanyun Guo, Shenggui Fu, Gongxiang Wei, Miaomiao Wang, Meng Cui, Chunxiao Meng
Sustainable renewable energy is being hotly debated globally because the continued use of finite fossil fuels is now widely recognized as being unsustainable. Microalgae potentially offer great opportunities for resolving this challenge. Abscisic acid (ABA), jasmonic acid (JA) and salicylic acid (SA) are involved in regulating many physiological properties and have been widely used in higher plants. To test if phytohormones have an impact on accumulating lipid for microalgae, ABA, JA and SA were used to induce two Chlorella strains in the present study...
December 30, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29311075/phytohormones-isoprenoids-and-role-of-the-apicoplast-in-recovery-from-dihydroartemisinin-induced-dormancy-of-plasmodium-falciparum
#19
Marvin Duvalsaint, Dennis E Kyle
Many organisms undergo dormancy as a stress response to survive under unfavorable conditions that might impede development. This is observed in seed and buds of plants and has been proposed as mechanism of drug evasion and resistance formation in Plasmodium falciparum We explored the effects of the phytohormones, abscisic acid (ABA) and gibberellic acid (GA), on dihydroartemisinin induced dormant erythrocytic stages of P. falciparum parasites. Dormant ring stages exposed to ABA and GA recovered from dormancy up to 48 hr earlier than parasites exposed to DHA alone...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29309666/arabidopsis-phospholipase-c3-is-involved-in-lateral-root-initiation-and-aba-responses-in-seed-germination-and-stomatal-closure
#20
Qianqian Zhang, Ringo van Wijk, Muhammad Shahbaz, Wendy Roels, Bas van Schooten, Joop E M Vermeer, Xavier Zarza, Aisha Guardia, Denise Scuffi, Carlos García-Mata, Debabrata Laha, Phoebe Williams, Leo A J Willems, Wilco Ligterink, Susanne Hoffmann-Benning, Glenda Gillaspy, Gabriel Schaaf, Michel A Haring, Ana M Laxalt, Teun Munnik
Phospholipase C (PLC) is well known for its role in animal signaling, where it generates the second messengers, inositol 1,4,5-trisphosphate (IP3) and diacylglycerol (DAG) by hydrolyzing the minor phospholipid, phosphatidylinositol 4,5-bisphosphate (PIP2) upon receptor stimulation. In plants, PLC's role is still unclear, especially because the primary targets of these second messengers are lacking, i.e. the ligand-gated Ca2+ channel and protein kinase C, but also because PIP2 levels are extremely low. Nonetheless, the Arabidopsis genome encodes 9 PLCs...
December 22, 2017: Plant & Cell Physiology
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