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Molecular Plant

Le Dong, Lina Li, Changlin Liu, Chenxu Liu, ShuaifengGeng, Xinhai Li, Changling Huang, Long Mao, Shaojiang Chen, Chuanxiao Xie
No abstract text is available yet for this article.
July 13, 2018: Molecular Plant
Henk W M Hilhorst, Maria-Cecília D Costa, Jill M Farrant
No abstract text is available yet for this article.
July 13, 2018: Molecular Plant
Zofia Szweykowska-Kulinska, Artur Jarmolowski
No abstract text is available yet for this article.
July 7, 2018: Molecular Plant
Zicong Li, Yang Ou, Zhicheng Zhang, Jianming Li, Yuehui He
The steroid hormone brassinosteroid (BR) plays a broad role in plant growth and development. As the retarded growth in BR-insensitive and BR-deficient mutants causes a strong delay in 'days to flowering', BR signaling has been thought to promote the floral transition in Arabidopsis. In this study, using the developmental criterion to measure flowering times we show that BR signaling inhibits the floral transition and promotes vegetative growth in the Arabidopsis accessions Columbia and Enkheim-2. We found that BR signaling promotes the expression of the potent floral repressor FLOWERING LOCUS C (FLC) and three FLC homologs to inhibit flowering...
June 30, 2018: Molecular Plant
Lina Baz, Narumi Mori, Jianing Mi, Muhammad Jamil, Boubacar A Kountche, Xiujie Guo, Aparna Balakrishna, Kun-Peng Jia, Martina Vermathen, Kohki Akiyama, Salim Al-Babili
No abstract text is available yet for this article.
June 30, 2018: Molecular Plant
Karolina Garbowicz, Zhongyuan Liu, Saleh Alseekh, Denise Tieman, Mark Taylor, Anastasiya Kuhalskaya, Itai Ofner, Dani Zamir, Harry J Klee, Alisdair R Fernie, Yariv Brotman
To gain insight into the genetic regulation of lipid metabolism in tomato, we conducted metabolic trait loci (mQTL) analysis following the lipidomic profiling of fruit pericarp and leaf tissue of the Solanum pennellii introgression lines. To enhance mapping resolution for selected fruit-specific mQTL, we profiled the lipids in a subset of independently derived S. pennellii backcross inbred lines, as well as in a near-isogenic (sub-IL) population. We identified a putative lecithin:cholesterol acyltransferase that controls the levels of several lipids, and two members of the class III lipase family, LIP1 and LIP2, that were associated with decreased levels of diacylglycerols (DAGs) and triacylglycerols (TAGs)...
June 27, 2018: Molecular Plant
Yan Cui, Chun-Lin Chen, Man Cui, Wen-Juan Zhou, Hui-Lan Wu, Hong-Qing Ling
Plants have evolved sophisticated genetic networks to regulate iron (Fe) homeostasis for their survival. Several classes of plant hormones including Jasmonic acid (JA) have been shown to be involved in regulating the expression of iron uptake and/or deficiency-responsive genes in plants. However, the molecular mechanisms by which JA regulates iron uptake remain unclear. In this study, we found that JA negatively modulated iron uptake by downregulating the expression of FIT (bHLH29), bHLH38, bHLH39, bHLH100, and bHLH101 and promoting the degradation of FIT protein, a key regulator of iron uptake in Arabidopsis...
June 27, 2018: Molecular Plant
Fei Du, Chunmei Guan, Yuling Jiao
Plants maintain the ability to form lateral appendages throughout their life cycle and form leaves as the principal lateral appendages of the stem. Leaves initiate at the peripheral zone of the shoot apical meristem, then develop into flattened structures. In most plants, the leaf functions as a solar panel, where photosynthesis converts carbon dioxide and water into carbohydrates and oxygen. To produce structures that can optimally fulfil this function, plants precisely regulate the initiation, shape, and polarity of leaves...
June 27, 2018: Molecular Plant
Jan Traas
No abstract text is available yet for this article.
June 23, 2018: Molecular Plant
Benoît Boachon, C Robin Buell, Emily Crisovan, Natalia Dudareva, Nicolas Garcia, Grant Godden, Laura Henry, Mohamed O Kamileen, Heather Rose Kates, Matthew B Kilgore, Benjamin R Lichman, Evgeny V Mavrodiev, Linsey Newton, Carlos Rodriguez-Lopez, Sarah E O'Connor, Douglas Soltis, Pamela Soltis, Brieanne Vaillancourt, Krystle Wiegert-Rininger, Dongyan Zhao
The evolution of chemical complexity has been a major driver of plant diversification, with novel compounds serving as key innovations. The species-rich mint family (Lamiaceae) produces an enormous variety of compounds that act as attractants and defense molecules in nature and are used widely by humans as flavor additives, fragrances, and anti-herbivory agents. To elucidate the mechanisms by which such diversity evolved, we combined leaf transcriptome data from 48 Lamiaceae species and four outgroups with a robust phylogeny and chemical analyses of three terpenoid classes (monoterpenes, sesquiterpenes, iridoids) that share and compete for precursors...
June 16, 2018: Molecular Plant
Yuwei Sun, Zhuo Chen, Jianxu Li, Jianhua Li, Huajun Lv, Jingya Yang, Weiwei Li, Dingan Xie, Zhiqiang Xiong, Peng Zhang, Yong Wang
No abstract text is available yet for this article.
June 6, 2018: Molecular Plant
Lun Wang, Fa He, Yue Huang, Jiaxian He, Shuizhi Yang, Jiwu Zeng, Chongling Deng, Xiaolin Jiang, Yiwen Fang, Shaohua Wen, Rangwei Xu, Huiwen Yu, Xiaoming Yang, Guangyan Zhong, Chuanwu Chen, Xiang Yan, Changfu Zhou, Hongyan Zhang, Zongzhou Xie, Robert M Larkin, Xiuxin Deng, Qiang Xu
Mandarin (Citrus reticulata) is one of the most important citrus crops worldwide. Its domestication is believed to occur in South China, which has been one of the cultivation centers for four millennia. We collected natural wild populations of mandarin around the Nanling region and cultivated landraces in the vicinity. The citric acid level was dramatically reduced in cultivated mandarins. To understand the genetic basis of mandarin domestication, we de novo assembled a draft genome of wild mandarin and analyzed a set of 104 citrus genomes...
June 6, 2018: Molecular Plant
Guangjin Fan, Yang Yang, Tingting Li, Wenqin Lu, Yu Du, Xiaoyu Qiang, Qujiang Wen, Weixing Shan
Phytophthora pathogens secrete a large arsenal of effectors that manipulate host processes to create an environment conducive to their colonization. However, the underlying mechanisms by which Phytophthora effectors manipulate host plant cells still remain largely unclear. In this study, we report that PcAvr3a12, a Phytophthora capsici RXLR effector and a member of the Avr3a effector family, suppresses plant immunity by targeting and inhibiting peptidyl-prolyl cis-trans isomerase (PPIase). Overexpression of PcAvr3a12 in Arabidopsis thaliana enhanced plant susceptibility to P...
June 1, 2018: Molecular Plant
Yubing He, Min Zhu, Lihao Wang, Junhua Wu, Qiaoyan Wang, Rongchen Wang, Yunde Zhao
No abstract text is available yet for this article.
May 29, 2018: Molecular Plant
Haitao Cui, Jingde Qiu, Yue Zhou, Deepak D Bhandari, Chunhui Zhao, Jaqueline Bautor, Jane E Parker
In plant immunity, pathogen-activated intracellular nucleotide binding/leucine rich repeat (NLR) receptors mobilize disease resistance pathways but the downstream signaling mechanisms remain obscure. Enhanced disease susceptibility 1 (EDS1) controls transcriptional reprogramming in resistance triggered by Toll-Interleukin1-Receptor domain (TIR)-family NLRs (TNLs). Transcriptional induction of the salicylic acid (SA) hormone defense sector provides one crucial barrier against biotrophic pathogens. Here we present genetic and molecular evidence in Arabidopsis that an EDS1 complex with its partner phytoalexin deficient 4 (PAD4) inhibits MYC2 (myelocytomatosis oncogene homolog 2), a master regulator of SA-antagonizing jasmonic acid (JA) hormone pathways...
May 26, 2018: Molecular Plant
Taichiro Iki, Antoine Cléry, Nicolas Bologna, Alexis Sarazin, Christopher Brosnan, Nathan Pumplin, Frédéric H T Allain, Olivier Voinnet
In eukaryotes, the RNase-III Dicer often produces length/sequence microRNA (miRNA) variants, called "isomiRs", owing to intrinsic structural/sequence determinants of miRNA precursors (pre-miRNAs). Here, we combined biophysics, genetics and biochemistry to study Arabidopsis miR168, the key feedback-regulator of the central plant silencing effector protein ARGONAUTE1 (AGO1). We identified a motif conserved among plant pre-miR168 orthologs that enables flexible internal base-pairing underlying at least three metastable structural configurations...
May 24, 2018: Molecular Plant
Haifeng Wang, Danhua Jiang, Elin Axelsson, Zdravko J Lorković, Sean Montgomery, Sarah Holec, Bas J G E Pieters, Abbas H K Al Temimi, Jasmin Mecinović, Frédéric Berger
Heterochromatin Protein 1 (HP1) is a major regulator of chromatin structure and function. In animals, the network of proteins interacting with HP1 is mainly associated with constitutive heterochromatin marked by H3K9me3. HP1 physically interacts with the putative ortholog of the SNF2 chromatin remodeler ATRX, which controls deposition of histone variant H3.3 in mammals. In this study, we show that the Arabidopsis thaliana ortholog of ATRX participates in H3.3 deposition and possesses specific conserved domains in plants...
May 21, 2018: Molecular Plant
Zhichao Xu, Tianyi Xin, Dorothea Bartels, Ying Li, Wei Gu, Hui Yao, Sai Liu, Haoying Yu, Xiangdong Pu, Jianguo Zhou, Jiang Xu, Caicai Xi, Hetian Lei, Jingyuan Song, Shilin Chen
Resurrection plants, which are the "gifts" of natural evolution, are ideal models for studying the genetic basis of plant desiccation tolerance. Here, we report a high-quality genome assembly of 301 Mb for the diploid spike moss Selaginella tamariscina, a primitive vascular resurrection plant. We predicated 27 761 protein-coding genes from the assembled S. tamariscina genome, 11.38% (2363) of which showed significant expression changes in response to desiccation. Approximately 60.58% of the S. tamariscina genome was annotated as repetitive DNA, which is an almost 2-fold increase of that in the genome of desiccation-sensitive Selaginella moellendorffii...
May 17, 2018: Molecular Plant
Huadong Zhan, Haibo Xiong, Shui Wang, Zhong-Nan Yang
No abstract text is available yet for this article.
May 12, 2018: Molecular Plant
Bin Zhang, Chi Zhang, Congge Liu, Yanping Jing, Yuan Wang, Ling Jin, Lei Yang, Aigen Fu, Jisen Shi, Fugeng Zhao, Wenzhi Lan, Sheng Luan
Manganese (Mn) is an essential catalytic metal in the Mn-cluster that oxidizes water to produce oxygen during photosynthesis. However, the transport protein(s) responsible for Mn2+ import into the chloroplast remains unknown. Here, we report the characterization of Arabidopsis CMT1 (Chloroplast Manganese Transporter 1), an evolutionarily conserved protein in the Uncharacterized Protein Family 0016 (UPF0016), that is required for manganese accumulation into the chloroplast. CMT1 is expressed primarily in green tissues, and its encoded product is localized in the inner envelope membrane of the chloroplast...
May 5, 2018: Molecular Plant
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