Stoichiometric homeostasis of Morus alba in the dry-hot valley

Stoichiometric homeostasis is an important strategy used by plants to function optimally in changing environments. In order to investigate whether plants under stricter resource restrictions exhibit stronger homeostasis, this study took inhabiting in a dry-hot valley as the research subject. The sto...

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Published inFrontiers in plant science Vol. 16; p. 1520936
Main Authors Guo, Haixia, Luo, Sheng, Chen, Siyuan, Li, Yike, Zhang, Jianhua, Chen, Guantao, Wang, Xie
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 17.03.2025
Subjects
altitude
Morus alba
Plant Science
slope
soil
stoichiometric homeostasis
altitude
soil
stoichiometric homeostasis
Morus alba
slope
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Summary:Stoichiometric homeostasis is an important strategy used by plants to function optimally in changing environments. In order to investigate whether plants under stricter resource restrictions exhibit stronger homeostasis, this study took inhabiting in a dry-hot valley as the research subject. The stoichiometry of leaves, their variations in response to altitude and slope, and their correlations with soil were analyzed. The results showed that soil nutrient levels were higher on the shady slope compared to the sunny slope, and responded differently to altitude on the two slopes. On the sunny slope, soil carbon (C) content increased significantly with altitude, whereas on the shady slope, soil phosphorus (P) content decreased with increasing altitude. The C: N and C: P ratios of the soil were lower than the average in China. The C: N and C: P ratios of leaves were lower than those of global and Chinese forest ecosystems. The N: P ratio of leaves was < 14. However, no significant correlation was observed between leaves and soil C, N, P, or stoichiometric characteristics. The changes in C, N, and P and their ratios in leaves did not correspond with those in the soil. exhibited "strict homeostasis" on both sunny and shady slopes. The results suggest that growth is limited by nutrients availability, particularly nitrogen. The strict stoichiometric homeostasis is an adaptation strategy for in dry-hot valleys to alleviate nutrient limitations, which leads to a decoupling of ecological stoichiometry between leaves and soil.
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Edited by: Muthusamy Ramakrishnan, Nanjing Forestry University, China
Shu Wang, Southwest Forestry University, China
Reviewed by: Weiguo Zhao, Jiangsu University of Science and Technology, China
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2025.1520936