Han et al. (Pages 1394–1410) conducted RNA-seq to produce a detailed transcriptome profile of ten groups of size-selected anthers (from very early stage anthers to anthers containing mature pollen) in the Chinese elite maize line Chang7-2, and further explored the function of a phase-specific gene, ZmDRP1, in maintaining male fertility in maize. The cover image shows the middle part of a maize tassel consisting of hundreds of spikelets. Each spikelet comprises two florets and each floret contains three dehiscent anthers with pollen grains.
Breakthrough Report
UBA domain protein SUF1 interacts with NatA-complex subunit NAA15 to regulate thermotolerance in Arabidopsisfree
Ze‐Ting Song, Xiao‐Jie Chen, Ling Luo, Feifei Yu, Jian‐Xiang Liu and Jia‐Jia Han
During recovery from heat stress, plants clear away heat-stress-induced misfolded proteins through the ubiquitin-proteasome system (UPS) and the N-terminal acetyltransferase A (NatA) complex regulates the recognition of UPS substrate proteins. STRESS-RELATED UBIQUITIN-ASSOCIATED-DOMAIN PROTEIN FACTOR1 interacts with the NatA complex and plays important roles in basal thermotolerance in Arabidopsis.
Mini Review
Rapid responses: Receptor-like kinases directly regulate the functions of membrane transport proteins in plants
Xiaopeng Li, Jingjie Zhang, Hongyong Shi, Bo Li and Jia Li
Receptor-like kinases (RLKs) are a large group of plant-specific transmembrane proteins mainly acting as receptors or co-receptors of various extracellular signals. This minireview summarizes recent showing regarding how RLKs work collaboratively with membrane transport proteins and thereby trigger cellular responses in a precise and rapid manner.
Abiotic Stress Responses
REVEILLE 7 inhibits the expression of the circadian clock gene EARLY FLOWERING 4 to fine-tune hypocotyl growth in response to warm temperatures
Ying‐Ying Tian, Wei Li, Mei‐Jing Wang, Jin‐Yu Li, Seth Jon Davis and Jian‐Xiang Liu
Warm temperature–induced REVEILLE 7 fine-tunes thermoresponsive hypocotyl growth by inhibiting the expression of EARLY FLOWERING 4 (ELF4) in Arabidopsis, indicating that ELF4 is important for thermomorphogenesis in plants.
Cell and Developmental Biology
GmPIN1-mediated auxin asymmetry regulates leaf petiole angle and plant architecture in soybeanopen
Zhongqin Zhang, Le Gao, Meiyu Ke, Zhen Gao, Tianli Tu, Laimei Huang, Jiaomei Chen, Yuefeng Guan, Xi Huang and Xu Chen
The auxin efflux transporter PINFORMED1 (GmPIN1) determines polar auxin transport and regulates leaf petiole angle in soybean. Asymmetric (iso)flavonoid biosynthesis, GmPIN1a/c expression, auxin accumulation, and cell expansion create desirable petiole curvature in soybean.
A feedback regulation between ARF7-mediated auxin signaling and auxin homeostasis involving MES17 affects plant gravitropismopen
Feng Zhang, Cuiling Li, Xingzhen Qu, Jiajia Liu, Zipeng Yu, Junxia Wang, Jiayong Zhu, Yongqiang Yu and Zhaojun Ding
AUXIN RESPONSE FACTOR 7 (ARF7) is essential for gravitropic responses through regulation of auxin homeostasis. ARF7-mediated auxin signaling stimulates the expression of METHYL ESTERASE17 (MES17), which catalyses the conversion from methylated indole-3-acetic acid (IAA) to free IAA and amplifies auxin gradient formation in plant gravitropism.
bZIP71 delays flowering by suppressing Ehd1 expression in ricefree
Xiufeng Li, Xiaojie Tian, Mingliang He, Xinxin Liu, Zhiyong Li, Jiaqi Tang, Enyang Mei, Min Xu, Yingxiang Liu, Zhenyu Wang, Qingjie Guan, Wei Meng, Jun Fang, Jian Zhang and Qingyun Bu
bZIP71 functions as a flowering repressor in rice and recruits Polycomb Repressive Complex 2 to the Early heading date1 locus, enhancing H3K27me3 levels and repressing expression.
Functional Omics and Systems Biology
The Larix kaempferi genome reveals new insights into wood propertiesopen
Chao Sun, Yun‐Hui Xie, Zhen Li, Yan‐Jing Liu, Xiao‐Mei Sun, Jing‐Jing Li, Wei‐Peng Quan, Qing‐Yin Zeng, Yves Van de Peer and Shou‐Gong Zhang
Examination of the high-quality genome of the Japanese larch Larix kaempferi reveals key features of this tree species and illustrates the crucial roles of genes encoding laccase and Class III peroxidases in wood properties of conifers.
EXPLICIT-Kinase: A gene expression predictor for dissecting the functions of the Arabidopsis kinome
Yuming Peng, Wanzhu Zuo, Hui Zhou, Fenfen Miao, Yu Zhang, Yue Qin, Yi Liu, Yu Long and Shisong Ma
Protein kinases regulate virtually all cellular processes, but it is challenging to determine the functions of all protein kinases, collectively called the ‘kinome’, in any species. A computational approach called EXPLICIT-Kinase was developed to predict the functions of the Arabidopsis kinome.
Exploring key developmental phases and phase-specific genes across the entirety of anther development in maize
Yingjia Han, Mingjian Hu, Xuxu Ma, Ge Yan, Chunyu Wang, Siqi Jiang, Jinsheng Lai and Mei Zhang
Next-generation sequencing of the four key maize anther development phases based on anther length identified phase-specific marker genes, providing a valuable resource for exploring key phase-specific genes that play essential roles during anther development.
Molecular Physiology
WHIRLY1 recruits the histone deacetylase HDA15 repressing leaf senescence and flowering in Arabidopsisopen
Dongmei Huang, Wei Lan, Weibo Ma, Rulin Huang, Wenfang Lin, Mengsi Li, Chia‐Yang Chen, Keqiang Wu and Ying Miao
WHIRLY1 is a ssDNA/RNA binding protein that recruits the histone deacetylase HDA15 to co-repress transcription of target genes (e.g., WRKY53, ELF4, GSTF10, ncRNA, and PDIL1-2) by H3K9 deacetylation. This is a key node for transcriptional regulation of leaf senescence and flowering.
Plant Reproduction Biology
DEAP1 encodes a fasciclin-like arabinogalactan protein required for male fertility in ricefree
Dan Zhou, Ting Zou, Kaixuan Zhang, Pingping Xiong, Fuxing Zhou, Hao Chen, Gongwen Li, Kaiyou Zheng, Yuhao Han, Kun Peng, Xu Zhang, Shangyu Yang, Qiming Deng, Shiquan Wang, Jun Zhu, Yueyang Liang, Changhui Sun, Xiumei Yu, Huainian Liu, Lingxia Wang, Ping Li and Shuangcheng Li
DEFECTIVE EXINE AND APERTURE PATTERNING1 (DEAP1) encodes a plasma membrane-associated fasciclin-like arabinogalactan protein that preferentially accumulates in reproductive cells and the tapetum layer. DEAP1 plays a crucial role in exine formation and aperture patterning during rice pollen development, possibly by interacting with rice D6 PROTEIN KINASE-LIKE3 proteins.
Natural variation in the NAC transcription factor NONRIPENING contributes to melon fruit ripeningfree
Jinfang Wang, Shouwei Tian, Yongtao Yu, Yi Ren, Shaogui Guo, Jie Zhang, Maoying Li, Haiying Zhang, Guoyi Gong, Min Wang and Yong Xu
CmNAC-NOR knockout in a climacteric-type melon cultivar completely inhibited fruit ripening, while ripening was delayed by 5–8 days in heterozygous cmnac-nor mutant fruits. Natural mutation of CmNAC-NOR enhanced transcriptional activation of its target genes. These findings may contribute to breeding programs aimed at creating long shelf-life melons.
转自：iPlants
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