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Molecular Plant

Lin-Hui Yu, Jie Wu, Zi-Sheng Zhang, Zi-Qing Miao, Ping-Xia Zhao, Zhen Wang, Cheng-Bin Xiang
Seed germination is a crucial checkpoint for plant survival under unfavorable environmental conditions. Abscisic acid (ABA) and its signaling play a vital role in integrating environmental information to regulate seed germination. MCM1/AGAMOUS/DEFICIENS/SRF (MADS)-box transcription factors are mainly known as key regulators of seed and flower development in Arabidopsis. However, little is known about their functions in seed germination. Here we report that MADS-box transcription factor AGL21 negatively modulates seed germination and post-germination growth by controlling the expression of ABA-INSENSITIVE 5 (ABI5) in Arabidopsis...
April 21, 2017: Molecular Plant
Stella Cesari, Thomas Kroj
No abstract text is available yet for this article.
April 19, 2017: Molecular Plant
William Underwood, Andrew Ryan, Shauna C Somerville
Deposition of cell wall-reinforcing papillae is an integral component of the plant immune response. The Arabidopsis PENETRATION 3 (PEN3) ATP binding cassette (ABC) transporter plays a role in defense against numerous pathogens and is recruited to sites of pathogen detection where it accumulates within papillae. However, the trafficking pathways and regulatory mechanisms contributing to recruitment of PEN3 and other defenses to the host-pathogen interface are poorly understood. Here, we report a confocal microscopy-based screen to identify mutants with altered localization of PEN3-GFP after inoculation with powdery mildew fungi...
April 18, 2017: Molecular Plant
Carlos Perea-Resa, Miguel A Rodríguez-Milla, Elisa Iniesto, Vicente Rubio, Julio Salinas
The process of cold acclimation is an important adaptive response whereby many plants from temperate regions increase their freezing tolerance after being exposed to low-nonfreezing temperatures. The correct development of this response relies on the precise accumulation of a number of transcription factors that regulate the appropriate patterns of cold-responsive gene expression. Multiple studies have revealed a variety of molecular mechanisms involved in promoting the accumulation of these transcription factors...
April 12, 2017: Molecular Plant
Sarfraz Shafiq, Chunli Chen, Jing Yang, Lingling Cheng, Fei Ma, Emilie Widemann, Qianwen Sun
R-loop structures (RNA:DNA hybrids) have important functions in many biological processes, including transcriptional regulation and genome instability among diverse organisms. DNA Topoisomerase 1 (TOP1), an essential manipulator of DNA topology during RNA transcription and DNA replication processes, can prevent R-loop accumulation by removing the positive and negative DNA supercoiling that is made by RNA polymerases during transcription. TOP1 is required for plant development, but little is known about its function in preventing co-transcriptional R-loops in different plant biological processes...
April 12, 2017: Molecular Plant
Yujun Ren, Yanyun Li, Youqiao Jiang, Binghua Wu, Ying Miao
Plastid-to-nucleus retrograde signaling is critical for normal growth and development in plants. The dual-function and dual-located ssDNA binding protein WHIRLY1 (WHY1) has been supposed to coordinate the retrograde signaling from plastids to the nucleus. However, the regulatory mechanism governing the functional switch of WHY1 for mediating plastid-to-nucleus retrograde signaling remains unknown. Here we report that the Calcineurin B-Like-Interacting Protein Kinase14 (CIPK14) interacts with and phosphorylates WHY1 in Arabidopsis...
April 12, 2017: Molecular Plant
Lu-Men Chao, Yao-Qian Liu, Dian-Yang Chen, Xue-Yi Xue, Ying-Bo Mao, Xiao-Ya Chen
Plant reproductive organs are vulnerable to heat, but regulation of heat shock responses (HSRs) in inflorescence is largely uncharacterized. Here, we report that two of the SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) transcriptional factors in Arabidopsis, SPL1 and SPL12, act redundantly in thermotolerance at reproductive stage. The spl1-1 spl12-1 inflorescences displayed hypersensitivity to heat stress, whereas overexpression of SPL1 or SPL12 enhanced the thermotolerance in both Arabidopsis and tobacco. RNA-seq revealed 1,939 upregulated and 1,479 downregulated genes in wild-type inflorescence upon heat stress, among which one quarter (1,040) was misregulated in spl1-1 spl12-1, indicating that the two SPLs contribute greatly to the heat-triggered transcriptional reprogramming in inflorescence...
April 8, 2017: Molecular Plant
Penggen Duan, Jinsong Xu, Dali Zeng, Baolan Zhang, Mufan Geng, Guozheng Zhang, Ke Huang, Luojiang Huang, Ran Xu, Song Ge, Qian Qian, Yunhai Li
The utilization of natural genetic variation greatly contributes to improvement of important agronomic traits in crops. Understanding the genetic basis for natural variation of grain size can help breeders develop high-yield rice varieties. In this study, we identify a previously unrecognized gene, named GSE5, in the qSW5/GW5 locus controlling rice grain size by combining the genome-wide association study (GWAS) with functional analyses. GSE5 encodes a plasma membrane-associated protein with IQ domains (IQD), which interacts with the rice calmodulin protein, OsCaM1-1...
March 30, 2017: Molecular Plant
Chi Tam Nguyen, Enrico Martinoia, Edward E Farmer
No abstract text is available yet for this article.
March 29, 2017: Molecular Plant
Michael Cummins, Edgar Huitema
No abstract text is available yet for this article.
March 29, 2017: Molecular Plant
Xiang Lu, Qing Xiong, Tong Cheng, Qing-Tian Li, Xin-Lei Liu, Ying-Dong Bi, Wei Li, Wan-Ke Zhang, Biao Ma, Yong-Cai Lai, Wei-Guang Du, Wei-Qun Man, Shou-Yi Chen, Jin-Song Zhang
Cultivated soybeans may lose some useful genetic locus during domestication. Introgression of genes from wild soybeans may broaden the genetic background and improve soybean agronomic traits. Here, through whole-genome sequencing of an RIL population derived from a cross between a wild soybean ZYD7 and a cultivated soybean HN44, and mapping of QTLs for seed weight, we discover that a phosphatase 2C-1 (PP2C-1) allele from wild soybean ZYD7 contributes to the increase of seed weight/size in transgenic plants...
March 28, 2017: Molecular Plant
Feng Liu, Huiyang Yu, Yingtian Deng, Jingyuan Zheng, Minglei Liu, Lijun Ou, Bozhi Yang, Xiongze Dai, Yanqing Ma, Shengyu Feng, Shuang He, Xuefeng Li, Zhuqing Zhang, Wenchao Chen, Shudong Zhou, Rong Chen, Minmin Liu, Sha Yang, Ruimin Wei, Huadong Li, Feng Li, Bo Ouyang, Xuexiao Zou
No abstract text is available yet for this article.
March 24, 2017: Molecular Plant
Mugui Wang, Yanfei Mao, Yuming Lu, Xiaoping Tao, Jian-Kang Zhu
No abstract text is available yet for this article.
March 16, 2017: Molecular Plant
Mugui Wang, Yuming Lu, José Ramón Botella, Yanfei Mao, Kai Hua, Jian-Kang Zhu
No abstract text is available yet for this article.
March 16, 2017: Molecular Plant
Qinjie Chu, Xingchen Zhang, Xintian Zhu, Chen Liu, Lingfeng Mao, Chuyu Ye, Qian-Hao Zhu, Longjiang Fan
No abstract text is available yet for this article.
March 15, 2017: Molecular Plant
Wei Chen, Ling Kui, Guanghui Zhang, Shusheng Zhu, Jing Zhang, Xiao Wang, Min Yang, Huichuan Huang, Yixiang Liu, Yong Wang, Yahe Li, Lipin Zeng, Wen Wang, Xiahong He, Yang Dong, Shengchao Yang
No abstract text is available yet for this article.
March 15, 2017: Molecular Plant
Dan Zhang, Wei Li, En-Hua Xia, Qun-Jie Zhang, Yuan Liu, Yun Zhang, Yan Tong, Yuan Zhao, Yong-Chao Niu, Jia-Huan Xu, Li-Zhi Gao
No abstract text is available yet for this article.
March 14, 2017: Molecular Plant
Sisi Zhang, Yajun Pan, Wang Tian, Mengqi Dong, Huifen Zhu, Sheng Luan, Legong Li
No abstract text is available yet for this article.
March 10, 2017: Molecular Plant
Nicola Zagari, Omar Sandoval-Ibañez, Niels Sandal, Junyi Su, Manuel Rodriguez-Concepcion, Jens Stougaard, Mathias Pribil, Dario Leister, Pablo Pulido
Plants contain various factors that transiently interact with subunits or intermediates of the thylakoid multiprotein complexes, promoting their stable association and integration. Hence, assembly factors are essential for chloroplast development and the transition from heterotrophic to phototrophic growth. Snowy cotyledon 2 (SCO2) is a DNAJ-like protein involved in thylakoid membrane biogenesis, and it interacts with the light-harvesting chlorophyll-binding protein LHCB1. In Arabidopsis thaliana, SCO2 function was described to be restricted to cotyledons, but here we show that in Lotus japonicus absence of SCO2 results not only in paler cotyledons but also in variegated true leaves...
March 9, 2017: Molecular Plant
Yang Zhong, Xiaofeng Xue, Zhiqiang Liu, Yongshuo Ma, Kewu Zeng, Lida Han, Jingjing Qi, Dae-Kyun Ro, Søren Bak, Sanwen Huang, Yuan Zhou, Yi Shang
No abstract text is available yet for this article.
March 2, 2017: Molecular Plant
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