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| 1 | 激素调控植物成花机理研究进展显示文摘开花是植物对环境的适应性表现,是在多种外源和内源信号形成的复杂成花调控网络下完成。植物激素作为最重要的内源信号参与者,在成花进程中扮演着重要角色。近年来,光周期等成花途径和表观遗传调控中激素的作用机理不断被解析。研究发现激素间存在协同和拮抗作用,并证实多种激素参与赤霉素(gibberellins,GA)途径中DELLA蛋白介导的多种成花调控途径。本文主要综述了GA在植物成花中的调控机理,同时探讨了脱落酸(abscisic acid,ABA)、生长素(auxin,IAA)、细胞分裂素(cytokinin,CTK)、水杨酸(salicylic acid,SA)、茉莉酸(jasmonic acid,JA)和乙烯(ethylene,ET)等其他内源激素在成花中的作用及其与DELLA、miRNAs和转录因子(transcription factor,TFs)等通路串联调控,为全面解析激素调控植物成花的网络提供参考。 | 邹礼平 潘铖 王梦馨 崔林 韩宝瑜 | 2020 | 遗传2020，42，8： | 22 |
| 2 | QTG-Seq Accelerates QTL Fine Mapping through QTL Partitioning and Whole-Genome Sequencing of Bulked Segregant Samples显示文摘Deciphering the genetic mechanisms underlying agronomic traits is of great importance for crop improvement. Most of these traits are controlled by multiple quantitative trait loci (QTLs), and identifying the underlying genes by conventional QTL fine-mapping is time-consuming and labor-intensive. Here, we devised a new method, named quantitative trait gene sequencing (QTG-seq), to accelerate QTL fine-mapping. QTGseq combines QTL partitioning to convert a quantitative trait into a near-qualitative trait, sequencing of bulked segregant pools from a large segregating population, and the use of a robust new algorithm for identifying candidate genes. Using QTG-seq, we fine-mapped a plant-height QTL in maize (Zea mays L.), qPH7, to a 300-kb genomic interval and verified that a gene encoding an NF-YC transcription factor was the functional gene. Functional analysis suggested that qPH7-encoding protein might influence plant height by interacting with a CO-like protein and an AP2 domain-containing protein. Selection footprint ana卜 ysis indicated that qPH7 was subject to strong selection during maize improvement. In summary, QTG-seq provides an efficient method for QTL fine-mapping in the era of “big data'. | Hongwei Zhang Xi Wang Qingchun Pan Pei Li Yunjun Liu Xiaoduo Lu Wanshun Zhong Minqi Li Linqian Han Juan Li Pingxi Wang Dongdong Li Yan Liu Qing Li Fang Yang Yuan-Ming Zhang Guoying Wang Lin Li | 2019 | Molecular Plant2019，12，3： | 13 |
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