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Molecular Plant

Riad Nadi, Eduardo Mateo-Bonmatí, Lucía Juan-Vicente, José Luis Micol
No abstract text is available yet for this article.
September 18, 2018: Molecular Plant
Chuankui Song, Katja Härtl, Kate McGraphery, Thomas Hoffmann, Wilfried Schwab
Plants emit an overabundance of volatile compounds, which serve their producers both as appreciated attractants to lure beneficial animals and repellent toxins to deter pests in a species-specific and concentration-dependent manner. Plants have evolved solutions to cope with the challenge to provide sufficient volatiles without poisoning themselves. Uridine-diphosphate sugar dependent glycosyltransferases (UGTs) acting on volatiles is one important part of this sophisticated system, which balances the levels of bioactive metabolites and prepares them for cellular and long-distance transport as well as, storage but still enable the remobilization of disarmed toxins for the benefit of plant protection...
September 14, 2018: Molecular Plant
Tongbing Su, Weihong Wang, Peirong Li, Bin Zhang, Pan Li, Xiaoyun Xin, Honghe Sun, Yangjun Yu, Deshuang Zhang, Xiuyun Zhao, Changlong Wen, Gang Zhou, Yuntong Wang, Hongkun Zheng, Shuancang Yu, Fenglan Zhang
Chinese cabbage is the most consumed leafy crop in East Asian countries. However, premature bolting induced by continuous low temperatures severely decreases its yield and quality, and therefore restricts the planting season and geographic distribution of the Chinese cabbage. In the past 40 years, spring Chinese cabbage with strong winterness has been selected to meet the market demand. Here, we report a genome variation map of Chinese cabbage which was generated from the resequencing data of 194 geographically diverse accessions of three ecotypes...
September 11, 2018: Molecular Plant
Hongli Lian, Pengbo Xu, Shengbo He, Jun Wu, Jian Pan, Wenxiu Wang, Feng Xu, Sheng Wang, Junsong Pan, Jirong Huang, Hong-Quan Yang
Light and the heterotrimeric G-protein are known to antagonistically regulate photomorphogenesis in Arabidopsis. However, whether light and G-protein coordinate the regulation of photomorphogenesis is largely unknown. Here we show that the blue light photoreceptor cryptochrome 1 (CRY1) physically interacts with the G-protein β subunit, AGB1, in a blue light-dependent manner. We also show that AGB1 interacts directly with HY5, a basic leucine zipper (bZIP) transcriptional factor that acts as a critical positive regulator of photomorphogenesis, to inhibit its DNA-binding activity...
August 31, 2018: Molecular Plant
Mingkun Yang, Xiaohuang Lin, Xin Liu, Jia Zhang, Feng Ge
Diatoms comprise a diverse and ecologically important group of eukaryotic phytoplankton that significantly contributes to marine primary production and global carbon cycling. Phaeodactylum tricornutum is commonly used as a model organism for studying diatom biology. Although its genome was sequenced in 2008, a high quality genome annotation has still not been obtained for this diatom. Here we develop a systematic approach for conducting an integrated proteogenomic analysis of P. tricornutum using mass spectrometry (MS) based proteomics data...
August 31, 2018: Molecular Plant
Huan Dong, Ling Bai, Yu Zhang, Guozeng Zhang, Yanqing Mao, Lulu Min, Fuyou Xiang, Dongdong Qian, Xiaohong Zhu, Chun-Peng Song
In plants, stomatal movements are tightly controlled by changes in cellular turgor pressure. Carbohydrates produced by glycolysis and the tricarboxylic acid cycle play an important role in regulating turgor pressure. Here, we describe an Arabidopsis mutant, bzu1, isolated in a screen for elevated leaf temperature in response to drought stress, which displays smaller stomatal pores and higher drought resistance than wild-type plants. BZU1 encodes a known acetyl-coenzyme A synthetase, ACN1, which acts in the first step of a metabolic pathway converting acetate to malate in peroxisomes...
August 18, 2018: Molecular Plant
Shikai Hu, Xingming Hu, Jiang Hu, Lianguang Shang, Guojun Dong, Dali Zeng, Longbiao Guo, Qian Qian
No abstract text is available yet for this article.
August 16, 2018: Molecular Plant
Zhe Liang, Yuke Geng, Xiaofeng Gu
No abstract text is available yet for this article.
August 15, 2018: Molecular Plant
Jianbin Yan, Ruifeng Yao, Li Chen, Suhua Li, Min Gu, Fajun Nan, Daoxin Xie
Jasmonates (JAs) are cyclic fatty acid-derived phytohormones that regulate diverse aspects of plant defense and development. The endogenous active JA molecule (+)-7-iso-JA-L -Ile (JA-Ile) and its analog coronatine trigger formation of a complex with the F-box protein COI1 and JAZ repressors to induce degradation of the JAZs through the 26S proteasome pathway in a COI1-dependent manner. To reveal the formation process of COI1-JA-JAZ ternary complex, we employed several biochemical approaches to examine how JA is dynamically perceived...
August 7, 2018: Molecular Plant
Ranran Wu, Fengxia Zhang, Lingyun Liu, Wei Li, Eran Pichersky, Guodong Wang
Nicotinamide adenine dinucleotide (NAD) biosynthesis, including synthesis from aspartate via the de novo pathway and from nicotinate (NA) via the Preiss-Handler pathway, is conserved in land plants. Diverse species of NA conjugates, which are mainly involved in NA detoxification, were also found in all tested land plants. Among these conjugates, MeNA (NA methyl ester) has been widely detected in angiosperm plants, although its physiological function and the underlying mechanism for its production in planta remain largely unknown...
July 25, 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.
July 2, 2018: Molecular Plant
Matthew Hill, Jing-Ke Weng
No abstract text is available yet for this article.
September 10, 2018: Molecular Plant
Anja Krieger-Liszkay, Sébastien Thomine
No abstract text is available yet for this article.
September 10, 2018: Molecular Plant
Leonore Reiser, Lisa Harper, Michael Freeling, Bin Han, Sheng Luan
No abstract text is available yet for this article.
September 10, 2018: Molecular Plant
En Li, Yong Cui, Fu-Rong Ge, Sen Chai, Wei-Tong Zhang, Qiang-Nan Feng, Liwen Jiang, Sha Li, Yan Zhang
Double fertilization in angiosperms requires the targeted delivery of immotile sperm to the eggs through pollen tubes. The polarity of tip-growing pollen tubes is maintained through dynamic association of active Rho GTPases of plants (ROP-GTP) with the apical plasma membrane. Guanine nucleotide exchange factors for ROPs (RopGEFs) catalyze the activation of ROPs and thereby affect spatiotemporal ROP signaling. Whereas RopGEFs have been found to be phosphorylated proteins, the kinases responsible for their phosphorylation in vivo and biological consequences of RopGEF phosphorylation in pollen tube growth remain unclear...
September 10, 2018: Molecular Plant
S Vinod Kumar
No abstract text is available yet for this article.
September 10, 2018: Molecular Plant
Le Dong, Lina Li, Changlin Liu, Chenxu Liu, Shuaifeng Geng, Xinhai Li, Changling Huang, Long Mao, Shaojiang Chen, Chuanxiao Xie
No abstract text is available yet for this article.
September 10, 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 a developmental measure of flowering time, 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...
September 10, 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 (IL). 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)...
September 10, 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 modulates 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...
September 10, 2018: Molecular Plant
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