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Molecular Plant

Peiguo Yuan, Kiwamu Tanaka, Liqun Du, B W Poovaiah
No abstract text is available yet for this article.
March 9, 2018: Molecular Plant
Eliana Marzol, Cecilia Borassi, Mauro Bringas, Ana Sede, Diana Rosa Rodríguez Garcia, Luciana Capece, Jose M Estevez
Extensins (EXTs) are highly repetitive plant O-glycoproteins that require several post-translational modifications (PTMs) to become functional in plant cell walls. First, they are hydroxylated on contiguous proline residues; then, they are O-glycosylated on hydroxyproline (Hyp) and serine. After secretion into the apoplast, O-glycosylated EXTs form a tridimensional network organized by inter- and intra-Tyr linkages. Recent studies have made significant progress in the identification of the enzymatic machinery required to process EXTs, which includes prolyl 4-hydroxylases (P4Hs), glycosyltransferases (GTs), papain-type cysteine-endopeptidases (CEPs), and peroxidases (PERs)...
March 9, 2018: Molecular Plant
Xiao Wang, Jiajin Zhang, Simei He, Yuanni Gao, Xiaoqin Ma, Yun Gao, Guanghui Zhang, Ling Kui, Wen Wang, Ying Wang, Shengchao Yang, Yang Dong
No abstract text is available yet for this article.
March 7, 2018: Molecular Plant
Yongyao Xie, Yaling Zhang, Jingluan Han, Jikai Luo, Gousi Li, Jianle Huang, Haibin Wu, Qingwei Tian, Qinlong Zhu, Yuanling Chen, Yoji Kawano, Yao-Guang Liu, Letian Chen
Plant height has a major effect on grain yield in crops such as rice (Oryza sativa), and the hormone gibberellic acid (GA) regulates many developmental processes that feed into plant height. Rice ELONGATED UPPERMOST INTERNODE 1 (Eui1) encodes a GA-deactivating enzyme governing elongation of uppermost internode. The expression of Eui1 is finely tuned, thereby maintaining homeostasis of endogenous bioactive GA and producing plants of normal plant height. Here, we identified a dominant dwarf mutant, dEui1, caused by the deletion of an RY motif-containing cis silencing element (SE1) in the intron of Eui1...
March 7, 2018: Molecular Plant
Hu-Hui Chen, Li Qu, Zhi-Hong Xu, Jian-Kang Zhu, Hong-Wei Xue
Unveiling the signal transduction of phytohormone abscisic acid (ABA) will be greatly helpful to improve plant responses to stressful environment. ABA signaling is perceived and mediated by multi-member receptor PYR/PYLs, while whose post-translational modification, especially phosphorylation, is largely unknown. Here we demonstrated that Arabidopsis EL1-like (AEL) casein kinases regulate various physiological processes, phosphorylate PYR/PYLs and promote their ubiquitination and degradation, leading to the suppressed ABA responses...
March 2, 2018: Molecular Plant
Lingxue Cao, Mila C Blekemolen, Nico Tintor, Ben J C Cornelissen, Frank L W Takken
Pathogens use effector proteins to manipulate their hosts. During infection of tomato the fungus Fusarium oxysporum secretes the effectors Avr2 and Six5. Whereas Avr2 suffices to trigger I-2-mediated cell death in heterologous systems, both effectors are required for I-2-mediated disease resistance in tomato. How Six5 participates in triggering resistance is unknown. Using BiFC assays we found that Avr2 and Six5 interact at plasmodesmata. Single-cell transformation revealed that a 2xRFP marker protein and Avr2-GFP only move to neighboring cells in the presence of Six5...
February 23, 2018: Molecular Plant
Yuannian Jiao
No abstract text is available yet for this article.
February 21, 2018: Molecular Plant
Fang Yan, Yongjie Kuang, Bin Ren, Jingwen Wang, Dawei Zhang, Honghui Lin, Bing Yang, Xueping Zhou, Huanbin Zhou
No abstract text is available yet for this article.
February 21, 2018: Molecular Plant
Xiaomin Peng, Shanshan Li, Hao Wang
No abstract text is available yet for this article.
February 21, 2018: Molecular Plant
Kai Hua, Xiaoping Tao, Fengtong Yuan, Dong Wang, Jian-Kang Zhu
No abstract text is available yet for this article.
February 21, 2018: Molecular Plant
Moaine El Baidouri, Kyung Do Kim, Brian Abernathy, Ying-Hui Li, Li-Juan Qiu, Scott A Jackson
Most plants are polyploid due to whole genome duplications (WGD) and can thus have duplicated genes. Following a WGD, paralogs are often fractionated (lost) and few duplicate pairs remains. Little attention has been paid to the role of DNA methylation in the functional divergence of paralogous genes. Using high-resolution methylation maps of accessions of domesticated and wild soybean, we show that soybean, a recent paleopolypoid with many paralogs, DNA methylation likely contributed to the elimination of genetic redundancy of polyploidy-derived gene paralogs...
February 21, 2018: Molecular Plant
Jeffrey L Bennetzen, Xuewen Wang
Flowering plant (angiosperm) genomes are exceptional in their variability with respect to genome size, ploidy, chromosome number, gene content, and gene arrangement. Gene movement, although observed in some of the earliest plant genome comparisons, has been relatively underinvestigated. We present herein a description of several interesting properties of plant gene and genome structure that are pertinent to the successful movement of a gene to a new location. These considerations lead us to propose a model that can explain the frequent success of plant gene mobility, namely that Small Insulated Genes Move Around (SIGMAR)...
February 17, 2018: Molecular Plant
Jianqiang Wu
No abstract text is available yet for this article.
February 17, 2018: Molecular Plant
Dan Ding, Kaiyuan Chen, Yuedan Chen, Hong Li, Kabin Xie
The Clustered Regularly Interspaced Short Palindromic Repeat (CRISPR) system has emerged as the revolutionary platform for DNA targeting. This system uses a site-specific RNA guide to direct a CRISPR effector (e.g., Cas9 and Cpf1) to a DNA target. Here, we elaborate a general strategy to simultaneously express multiple guide RNAs (gRNA) and CRISPR RNAs (crRNA) from introns of Cas9 and Cpf1. This method utilizes the endogenous tRNA processing system or crRNA processing activity of Cpf1 to cleave the spliced intron which contains tRNA-gRNA polycistron or crRNA-crRNA array...
February 17, 2018: Molecular Plant
Ulrike Zentgraf, Jasmin Doll, Lena Riester
No abstract text is available yet for this article.
February 16, 2018: Molecular Plant
Enamul Huq
No abstract text is available yet for this article.
February 16, 2018: Molecular Plant
Fan Xu, Tony Kuo, Yenny Rosli, Mao-Sen Liu, Limin Wu, Long-Fang Oliver Chen, Jennifer C Fletcher, Zinmay Renee Sung, Li Pu
Polycomb Group (PcG) and trithorax Group (trxG) proteins have been shown to act antagonistically to epigenetically regulate gene expression in eukaryotes. The trxG proteins counteract PcG-mediated floral repression in Arabidopsis, but their roles in other developmental processes are poorly understood. We investigated the interactions between the trxG genes, ARABIDOPSIS HOMOLOG OF TRITHORAX1 (ATX1) and ULTRAPETALA1 (ULT1), and the PcG gene EMBRYONIC FLOWER 1 (EMF1) during early development. Unexpectedly, we found that mutations in the trxG genes failed to rescue the early flowering phenotype of emf1 mutants...
February 8, 2018: Molecular Plant
Xin-Ran Li, Joyita Deb, S Vinod Kumar, Lars Østergaard
Plants respond to diurnal and seasonal changes in temperature by reprogramming vital developmental pathways. Understanding the molecular mechanisms that define environmental modulation of plant growth and reproduction is critical in the context of climate change that threatens crop yield worldwide. Here, we report that elevated temperature accelerates fruit dehiscence in members of the Brassicaceae family including the model plant Arabidopsis thaliana and important crop species. Arabidopsis fruit development is controlled by a network of interacting regulatory genes...
February 7, 2018: Molecular Plant
Yangping Li, Christophe Colleoni, Junjie Zhang, Qiqi Liang, Yufeng Hu, Holly Ruess, Reinhard Simon, Yinghong Liu, Hanmei Liu, Guowu Yu, Eric Schmitt, Chloé Ponitzki, Guangjian Liu, Huanhuan Huang, Feilong Zhan, Lin Chen, Yubi Huang, David Spooner, Binquan Huang
Wild potato species have substantial phenotypic and physiological diversity. Here, we report a comprehensive assessment of wild and cultivated potato species based on genomic analyses of 201 accessions of Solanum section Petota. We sequenced the genomes of these 201 accessions and identified 6,487,006 high-quality single nucleotide polymorphisms (SNPs) from 167 accessions in the clade 4 of Solanum section Petota, including 146 wild and 21 cultivated diploid potato accessions with a broad geographic distribution...
February 5, 2018: Molecular Plant
Chuanfa Liu, Guanting Niu, Huchen Zhang, Yafei Sun, Shubin Sun, Fugen Yu, Shan Lu, Yonghua Yang, Jianming Li, Zhi Hong
Asparagine (Asn/N)-linked glycans are important for protein folding, trafficking and endoplasmic reticulum-associated degradation in eukaryotes. The maturation of glycoproteins involves trimming of mannose residues by mannosidases and addition of other sugar molecules to the three-branched N-glycans in the Golgi. However, the biological importance of the Golgi-mediated mannose trimming is not fully understood. Here, we show that abolishment of two functionally redundant mannosidases MNS1 and MNS2 responsible for α1,2-mannose trimming on A and C branch led to a severe root growth inhibition under salt stress in Arabidopsis...
January 31, 2018: Molecular Plant
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