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Molecular Plant

Shuo-Lei Bu, Chao Liu, Ning Liu, Ji-Long Zhao, Lian-Feng Ai, Hao Chi, Kathy L Li, Chih-Wei Chien, Alma L Burlingame, Sheng-Wei Zhang, Zhi-Yong Wang
No abstract text is available yet for this article.
October 18, 2016: Molecular Plant
Shuai Huang, Aruna Balgi, Yaping Pan, Meng Li, Xiaoran Zhang, Lilin Du, Ming Zhou, Michel Roberge, Xin Li
Nucleotide-binding leucine-rich repeat (NLR) proteins serve as immune receptors in both plants and animals. To identify components required for NLR-mediated immunity, we designed and carried out a chemical genetics screen to search for small molecules that can alter resistance responses in Arabidopsis thaliana. From 13,600 compounds, we identified Ro 8-4304 that is able to specifically suppress the severe autoimmune phenotypes of chs3-2D (chilling sensitive 3, 2D), including the arrested growth morphology and heightened PR (Pathogenesis Related) gene expression...
October 15, 2016: Molecular Plant
Chongzhen Qian, Weiwei Mao, Yan Liu, Hui Ren, On Sun Lau, Xinhao Ouyang, Xi Huang
No abstract text is available yet for this article.
October 15, 2016: Molecular Plant
Zi-Shan Zhang, Mei-Jun Liu, Renate Scheibe, Jennifer Selinski, Li-Tao Zhang, Cheng Yang, Xiang-Long Meng, Hui-Yuan Gao
The mechanism by which the mitochondrial alternative oxidase (AOX) pathway contributes to PSII photoprotection is in dispute. The current consensus is that the AOX pathway protects photosystems by dissipating excess reducing equivalents that are exported from chloroplasts through the malate/oxaloacetate (Mal/OAA) shuttle, preventing the over-reduction of chloroplasts. Here, using the aox1a Arabidopsis mutant and nine other C3 and C4 species, an additional model of the AOX pathway in PSII photoprotection is proposed...
October 13, 2016: Molecular Plant
Yanli Xiang, Xiaopeng Sun, Shan Gao, Feng Qin, Mingqiu Dai
Drought is a major abiotic stress that causes the yearly yield loss of maize, a crop cultured worldwide, thus breeding drought tolerant maize cultivars is a priority target of the world agriculture. Clade A PP2C phosphatases (PP2C-A) are conserved in plants and are important for ABA signaling and plant drought response. However, the natural variations of PP2C-A genes that directly associated with levels of drought tolerance remain to be elucidated. Here, we conducted a candidate gene association analysis of ZmPP2C-A gene family in a maize panel consisting of 368 varieties collected worldwide, and identified a drought responsive gene ZmPP2C-A10 that is tightly associated with drought tolerance...
October 13, 2016: Molecular Plant
Heqiao Zhang, Zhifu Han, Wen Song, Jijie Chai
Secreted signaling peptides or peptide hormones play crucial roles in plant growth and development through coordination of cell-cell communication. Perception of peptide hormones in plants generally relies on membrane-localized receptor kinases (RKs). Progress has recently been made in structural elucidation of interactions between posttranslationally modified peptide hormones and RKs. The structural studies suggest conserved receptor binding and activation mechanisms of this type of peptide hormones involving their conserved C-termini...
October 12, 2016: Molecular Plant
Jing-Fen Tao, Jin-Zhi Zhou, Ting Xie, Xiao-Tao Wang, Qing-Yong Yang, Hong-Yu Zhang
No abstract text is available yet for this article.
October 11, 2016: Molecular Plant
Sandrine Bujaldon, Natsumi Kodama, Fabrice Rappaport, Rajagopal Subramanyam, Catherine de Vitry, Yuichiro Takahashi, Francis-André Wollman
The green alga Chlamydomonas reinhardtii contains several light-harvesting chlorophyll a/b complexes (LHC); four major LHCIIs, two minor LHCIIs and nine LHCIs. We characterized three chlorophyll b-less mutants to assess the effect of chlorophyll b deficiency on the function, assembly and stability of these chlorophyll a/b-binding proteins. We identified point mutations in two mutants that inactivate the CAO gene responsible for chlorophyll a to chlorophyll b conversion. All LHCIIs accumulated to wild type levels in a CAO mutant but their light-harvesting function for photosystem-II was impaired...
October 11, 2016: Molecular Plant
Qingbo Chen, Cong Man, Danning Li, Huijuan Tan, Ye Xie, Jirong Huang
Anthocyanins, a group of L-phenylalanine (Phe)-derived flavonoids, have been demonstrated to play important roles in plant resistance to stress and interactions between plants and animals. Although the anthocyanin biosynthetic pathway and its regulatory mechanisms have been extensively studied, it remains unclear whether the level of Phe supply affects anthocyanin biosynthesis. Here, we investigated the roles of arogenate dehydratase (ADT), which is the key enzyme that turns arogenate into Phe, in sucrose-induced anthocyanin biosynthesis in Arabidopsis...
October 5, 2016: Molecular Plant
Yi Zheng, Chen Jiao, Honghe Sun, Hernan G Rosli, Marina A Pombo, Peifen Zhang, Michael Banf, Xinbin Dai, Gregory B Martin, James J Giovannoni, Patrick X Zhao, Seung Y Rhee, Zhangjun Fei
No abstract text is available yet for this article.
October 5, 2016: Molecular Plant
Marion Eisenhut, Andrea Bräutigam, Stefan Timm, Alexandra Florian, Takayuki Tohge, Alisdair R Fernie, Hermann Bauwe, Andreas P M Weber
The photorespiratory pathway, short photorespiration, is an essential process in oxygenic photosynthetic organisms but also reduces the efficiency of photosynthetic carbon assimilation and is hence frequently considered as a wasteful process. By comparing the response of wild type plants and mutants impaired in photorespiration to a shift in ambient CO2 concentrations, we demonstrate that photorespiration also plays a beneficial role during short-term acclimation to reduced CO2 availability. Wild type plants responded with few differentially expressed genes, mostly involved in drought stress, which is likely a consequence of enhanced opening of stomata and concomitant water loss upon shift toward low CO2...
October 1, 2016: Molecular Plant
Fei Wang, Yafei Qi, Alizée Malnoë, Yves Choquet, Francis-André Wollman, Catherine de Vitry
In Chlamydomonas reinhardtii, the major protease involved in the maintenance of the photosynthetic machinery in thylakoid membranes - the FtsH protease - forms mostly large hetero-oligomers (∼1 MDa) comprising FtsH1 and FtsH2 subunits, whatever the light intensity for growth. Upon high light exposure, the FtsH subunits display a shorter half-life, which is counterbalanced by an increase in FTSH1/2 mRNA levels, resulting in a modest upregulation of FtsH1/2 proteins. Furthermore, we show that high light increases the protease activity through a hitherto unnoticed redox-controlled reduction of intermolecular disulfide bridges...
October 1, 2016: Molecular Plant
Pedro L Rodriguez
No abstract text is available yet for this article.
September 29, 2016: Molecular Plant
Dario Copetti, Rod A Wing
No abstract text is available yet for this article.
September 27, 2016: Molecular Plant
Frédéric Chaux, Xenie Johnson, Pascaline Auroy, Audrey Beyly-Adriano, Isabelle Te, Stéphan Cuiné, Gilles Peltier
No abstract text is available yet for this article.
September 27, 2016: Molecular Plant
Lei Liu, Fangming Wu, Wei Zhang
No abstract text is available yet for this article.
September 27, 2016: Molecular Plant
Sebastian Eves-van den Akker, Paul R J Birch
No abstract text is available yet for this article.
September 27, 2016: Molecular Plant
Xianan Xie, Hui Lin, Xiaowei Peng, Congrui Xu, Zhongfeng Sun, Kexin Jiang, Antian Huang, Xiaohui Wu, Nianwu Tang, Alessandra Salvioli, Paola Bonfante, Bin Zhao
The majority of terrestrial vascular plants are capable of forming mutualistic associations with obligate biotrophic arbuscular mycorrhizal (AM) fungi from the phylum Glomeromycota. This mutualistic symbiosis provides the fungus with fixed carbohydrates, and reciprocally improves plant phosphate (Pi) uptake. AM fungal transporters can acquire Pi from the soil through the hyphal networks. Nevertheless, the precise functions of AM fungal Pi transporters, and whether they act as sensors, apart from as nutrient transporters, in fungal signal transduction remain unclear...
September 26, 2016: Molecular Plant
Xiaolu Yang, Jinqiang Nian, Qingjun Xie, Jian Feng, Fengxia Zhang, Hongwei Jing, Jian Zhang, Guojun Dong, Yan Liang, Juli Peng, Guodong Wang, Qian Qian, Jianru Zuo
Plants assimilate inorganic nitrogen absorbed from soil into organic forms as Gln and Glu through the glutamine synthetase/glutamine:2-oxoglutarate amidotransferase (GS/GOGAT) cycle. Whereas GS catalyzes the formation of Gln from Glu and ammonia, GOGAT catalyzes the transfer of an amide group from Gln to 2-oxoglutarate to produce two molecules of Glu. However, the regulatory role of the GS/GOGAT cycle in the carbon-nitrogen balance is not well understood. Here, we report the functional characterization of the rice ABNORMAL CYTOKININ RESPONSE 1 (ABC1) gene that encodes an Fd-GOGAT...
September 24, 2016: Molecular Plant
Sen Lin, Yuanyuan Zhao, Yingfang Zhu, Michael Gosney, Xin Deng, Xiaohua Wang, Jinxing Lin
No abstract text is available yet for this article.
September 24, 2016: Molecular Plant
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