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Research progress in mechanism and influencing factors of root nodule senescence in leguminous plants
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Mingxia REN1, Jiamin AI2, Ruili ZHANG1, Yang LI1, Zhenshan DENG1, *
Acta Microbiologica Sinica | 2024, 64(12) : 4701 - 4726
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Acta Microbiologica Sinica | 2024, 64(12): 4701-4726
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Research progress in mechanism and influencing factors of root nodule senescence in leguminous plants
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Mingxia REN1, Jiamin AI2, Ruili ZHANG1, Yang LI1, Zhenshan DENG1, *
Affiliations
  • 1 School of Life Sciences, Yan'an University, Yan'an 716000, Shaanxi, China
  • 2 School of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
Published: 2024-09-13 doi: 10.13343/j.cnki.wsxb.20240398
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The nitrogen fixation in legume root nodules is of great significance for sustainable agricultural development and natural eco-environment protection. The growth period of root nodules can be divided into young, active, and senescence stages. Root nodule senescence is a complex physiological process involving the interactions of multiple genes and environmental factors. The functions and lifespan of root nodules can be altered by regulating nitrogenase activity and leghemoglobin gene expression levels. Biotic and abiotic stresses can accelerate the senescence of root nodules and reduce the biomass and productivity of leguminous plants. This article expounds the mechanism of morphological, physiological, biochemical, and molecular changes of root nodules during senescence and summarizes the biotic and abiotic factors that affect root nodule senescence. Furthermore, the measures for delaying the senescence of root nodules are discussed. These measures will prolong the symbiotic nitrogen fixation, improve the nitrogen utilization efficiency, and increase the overall nitrogen supply for seed filling of leguminous plants, thereby enhancing food security and reducing the adverse effects of chemical fertilizers on the environment.

symbiotic nitrogen fixation  /  root nodule  /  senescence mechanism  /  biotic and abiotic stresses  /  delaying senescence
Mingxia REN, Jiamin AI, Ruili ZHANG, Yang LI, Zhenshan DENG. Research progress in mechanism and influencing factors of root nodule senescence in leguminous plants[J]. Acta Microbiologica Sinica, 2024 , 64 (12) : 4701 -4726 . DOI: 10.13343/j.cnki.wsxb.20240398
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  • National Natural Science Foundation of China(32160003)
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Year 2024 volume 64 Issue 12
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Article Info
doi: 10.13343/j.cnki.wsxb.20240398
  • Receive Date：2024-06-30
  • Online Date：2026-03-21
  • Published：2024-09-13
Article Data
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History
  • Received：2024-06-30
  • Accepted：2024-09-12
Funding
National Natural Science Foundation of China(32160003)
Affiliations
    1 School of Life Sciences, Yan'an University, Yan'an 716000, Shaanxi, China
    2 School of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China

Corresponding:

*DENG Zhenshan, E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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