Manipulating the expression of a cell wall invertase gene increases grain yield in maize
Manipulating the expression of a cell wall invertase gene increases grain yield in maize
复制标题
操纵细胞壁转化酶基因的表达可提高玉米籽粒产量
DOI：
10.1007/s10725-017-0319-7
复制
发表时间：
2018-01-01
影响因子：
4.2
通讯作者：
Zhang, Hongxia
中科院分区：
文献类型：
--
作者：
Bi, Yu-Jing;Sun, Zhen-Cang;Zhang, Hongxia
细胞壁转化酶在植物的生长发育过程中起着重要作用，特别是在作物籽粒灌浆过程中。然而，它们在高产作物育种中的潜力尚未被研究。本研究以玉米主栽杂交种郑单958（ZD 958）为基础品种，比较了不同亲本自交系与郑58、长7-2的ZmGIF 1表达、细胞壁转化酶活性和糖含量，探讨了ZmGIF 1在玉米高产育种中的应用价值。ZD 958的亲本自交系。选择表现出较高ZmGIF 1表达和转化酶活性的亲本品种并进行杂交以提高ZmGIF 1的表达。与基础品种ZD 958相比，大多数杂交F1代的ZmGIF 1表达量和细胞壁转化酶活性均高于基础品种ZD 958，从而使籽粒产量增加。这些结果表明，ZmGIF 1的表达可以利用不同的亲本品种来操纵，以提高其杂交F1后代的籽粒产量。
Cell wall invertases play an important role in plant growth and development, especially in the grain filling of crop plants. However, their potential in high yield crop breeding has not been investigated. In this study, the main hybrid maize cultivar Zheng Dan 958 (ZD958) was used as a basic variety to assess whether ZmGIF1, a cell wall invertase from maize, can be used to breed new cultivars with higher grain yields.ZmGIF1expression, cell wall invertase activity, and sugar content in different parental inbred cultivars were compared with those in Zheng 58 and Chang 7-2, the parental inbred cultivars of ZD958. Parental cultivars which showed higherZmGIF1expression and invertase activity were selected and intercrossed to improve the expression ofZmGIF1. Compared with the basic cultivar ZD958, higherZmGIF1expression and cell wall invertase activity were observed in most hybrid F1 lines, leading to increased grain yield in them. All these results suggest that the expression ofZmGIF1can be manipulated using different parental cultivars to increase the grain yield of their hybrid F1 progenies.