Research Progress on Correlation of Rice Leaf Senescence and Discoloration with Nitrogen Reuse and Volatilization

doi:10.16819/j.1001-7216.2023.230605

Abstract

Abstract:

Leaf senescence is a critical development stage in the plant lifecycle, and leaf discoloration is a typical marker. The investigation on N recycle and reuse during the leaf color changing process can provide insights into the influence factors of N remobilization efficiency. This review delivers a brief overview about the internal and external factors that influence rice leaf discoloration and the types of stay-green varieties. Moreover, we summarized the latest research progress on the association between nitrogen reutilization-volatilization and rice leaf discoloration. This review elucidated the reasons behind the increasing nitrogen volatilization during the late reproductive stage of rice, and made a strong case for the development of straightforward leaf discoloration monitoring technology to create a quantitative indicator system for leaf discoloration characteristics. Such a review would clarify the relationships and mechanisms between rice leaf senescence dynamics and nitrogen reutilization and volatilization, photosynthetic assimilate accumulation, and nitrogen activation reutilization in the maturation process.

Key words: rice, nitrogen reuse, nitrogen volatilization, chlorophyll

摘要：

叶片衰老是植物生命周期中重要发育阶段，叶片转色失绿是该阶段的典型症状。研究叶片转色时发生的N素循环再利用过程，有助于了解N素转运效率的影响因素。本文简述了影响水稻叶片转色的内外因素和滞绿型品种的类型，重点总结了伴随水稻叶片转色过程中发生的N再利用及N挥发的研究进展，并推测生育后期水稻N挥发加剧的原因。提出应探索简便的叶片转色动态监控技术，并建立量化叶片转色特征的指标体系，这有助于阐明水稻成熟过程中叶片转色动态与N再利用及N挥发、光合同化物积累和N活化再利用的关系和机理。

关键词: 水稻, N再利用, N挥发, 叶绿素

TAO Yi, XU Yanan, YE Chang, ZHENG Guangjie, XU Chunmei, CHEN Song, CHU Guang, LIU Yuanhui, WANG Danying. Research Progress on Correlation of Rice Leaf Senescence and Discoloration with Nitrogen Reuse and Volatilization[J]. Chinese Journal OF Rice Science, 2023, 37(6): 553-562.

陶怡, 徐亚楠, 叶昌, 郑广杰, 徐春梅, 陈松, 褚光, 刘元辉, 王丹英. 水稻叶片衰老转色与氮循环利用及挥发关系的研究进展[J]. 中国水稻科学, 2023, 37(6): 553-562.

Figures/Tables 1

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