Pyramiding of the dep1-1 and NAL1 alleles achieves sustainable improvements in nitrogen-use efficiency and grain yield in japonica rice breeding

Simultaneous improvement of lodging resistance and grain yield by stacking dep1 with elite genes in rice

“…As the complex interplay between dep1 and other alleles demonstrated in current study, researchers should consider factors including different variants of dep1, candidate genes, genetic background, and planting conditions in using dep1 for breeding elite rice varieties (Fei et al 2019;Fu et al 2019Xu et al 2019; Our data here). Furthermore, it should be noted that current study adapts a rapid and e cient breeding method.…”

<italic>DMT1</italic> encodes a serine/cysteine protease that regulates rice tillering and participates in drought stress response

“…Chen 等 [34] 定位到一个与旗叶宽的 QTL, 通过精细定位发现这可能是由于 nal1 的可变剪切引起. Xu 等 [35] 发现 NAL nj6 和 DEP1-1 的等位基 因的聚合可以使得粳稻的氮吸收以及提高产量方面有着重要的作用, 可以有效提高水稻的分蘖数 和籽粒数并减少对氮肥的需求, 这为建设环境友好型农业提供了一种重要思路. 以上的种种结果 均也证明了 DMT1 的不同等位基因在改良水稻株型和提高水稻产量方面具有极大的应用潜力.…”

Introgression Lines: Valuable Resources for Functional Genomics Research and Breeding in Rice (Oryza sativa L.)

“…Introgression of GRF4 into the elite variety 93–11 carrying sd1 can significantly improve its NUE, thereby increasing yield ( Li et al, 2018b ). NAL1 and the gain-of-function mutation dep1-1 have been reported to play important roles in N-responsive tillering regulation, and pyramiding of the dep1-1 and NAL1 NJ6 alleles can achieve sustainable improvements in NUE and grain yield in japonica rice breeding ( Sun et al, 2014 ; Xu et al, 2019 ). The introgression of favorable alleles of other NUE-related genes such as OsTCP19 and OsSBM1 also showed great potential for genetic improvement of high NUE in rice ( Liu et al, 2021 ; Xu et al, 2021 ).…”