Hexokinase gene OsHXK1 positively regulates leaf senescence in rice.
Hexokinase gene OsHXK1 positively regulates leaf senescence in rice.
复制标题
己糖激酶基因OsHXK1正向调控水稻叶片衰老
DOI：
10.1186/s12870-021-03343-5
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发表时间：
2021-12-08
影响因子：
5.3
通讯作者：
Zhuang C
中科院分区：
文献类型：
--
作者：
Zheng S;Lu J;Yu D;Li J;Zhou H;Jiang D;Liu Z;Zhuang C
叶片衰老是一个高度复杂和精细的调控过程，任何与叶片衰老有关的因素的破坏都可能导致叶片过早或延迟衰老，从而导致作物产量的降低或增加。尽管科学家们付出了巨大的努力，但有关叶片衰老的调控因子和分子机制仍有许多问题尚未解决。本研究成功揭示了OsHXK 1在水稻衰老叶片中的高效表达。OsHXK 1的表达上调导致水稻叶片早衰，叶绿素含量下降，叶绿体结构受损。OsHXK 1的过表达导致葡萄糖和ROS水平的增加，并在孕穗期早期产生程序性细胞死亡（PCD）信号。进一步分析表明，OsHXK 1过表达植株在孕穗期呼吸爆发氧化酶同源基因（RBOH）和OsGLO 1的表达量增加。综上所述，OsHXK 1可能通过调节葡萄糖积累和诱导活性氧的增加，对水稻叶片衰老起到正调控作用。在线版本包含补充材料，可通过10.1186/s12870-021-03343-5获取。
Leaf senescence is a highly complex and meticulous regulatory process, and the disruption of any factor involved in leaf senescence might lead to premature or delayed leaf senescence and thus result in reduced or increased crop yields. Despite sincere efforts by scientists, there remain many unsolved problems related to the regulatory factors and molecular mechanisms of leaf senescence. This study successfully revealed that OsHXK1 was highly expressed in senescent leaves of rice. The upregulation of OsHXK1 led to premature senescence of rice leaves, a decreased level of chlorophyll, and damage to the chloroplast structure. The overexpression of OsHXK1 resulted in increases in glucose and ROS levels and produced programmed cell death (PCD) signals earlier at the booting stage. Further analysis showed that expression level of the respiratory burst oxidase homolog (RBOH) genes and OsGLO1 were increased in OsHXK1-overexpressing plants at the booting stage. Overall, the outcomes of this study suggested that OsHXK1 could act as a positive regulator of rice leaf senescence by mediating glucose accumulation and inducing an increase in ROS. The online version contains supplementary material available at 10.1186/s12870-021-03343-5.
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影响因子：
27.5
作者：
Ma, Xingliang;Zhang, Qunyu;Liu, Yao-Guang
通讯作者：
Liu, Yao-Guang
影响因子：
5.1
作者：
Lee, RH;Lin, MC;Chen, SCG
通讯作者：
Chen, SCG
影响因子：
7.4
作者：
Contento, AL;Kim, SJ;Bassham, DC
通讯作者：
Bassham, DC
DOI：
10.1016/0304-4211(76)90094-8
发表时间：
1976-01-01
期刊：
PLANT SCIENCE LETTERS
影响因子：
--
作者：
BISWAL, UC;MOHANTY, P
通讯作者：
MOHANTY, P
影响因子：
56.9
作者：
GAN, SS;AMASINO, RM
通讯作者：
AMASINO, RM