Elevational shifts in nutrient strategies of Abies fabri: From morphological foraging to enzymatic mining

IF 3.4 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2026-09-17 Epub Date: 2026-06-23 DOI:10.1111/plb.70247
L. Ji, Y. Hu, X. Lu, B. Duan
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引用次数: 0

Abstract

冷杉营养策略的海拔变化:从形态觅食到酶挖掘。
高寒针叶林的养分获取主要受氮、磷和寒冷土壤的影响,但冷杉养分获取特性的海拔调节机制尚不清楚。在贡嘎山样带(2,800-3,400 m),土壤无机氮随海拔高度显著下降,而有效磷(这里定义为bray1可提取磷)在海拔高度之间差异不显著。对海拔2,800、3,100和3,400 m的森林进行土壤养分、叶片N:P、叶片N和P组分、根系形态、根系渗出物、菌根定植、根系酶活性和非结构性碳水化合物(NSC)的采样,以测试叶片养分状况与地下获取性状的关系。性状模式不遵循有效磷梯度的方向。随着海拔的升高,叶面氮分配从Rubisco向细胞壁池转移,而叶面磷分配向代谢池和核酸池转移。细根形态较为保守,比根长(SRL)和比根面积(SRA)较低,而酸性磷酸酶(APase)和n同化酶活性升高。随着叶片N:P在高海拔地区的下降,布草的响应反映了氮磷化学计量背景、内部养分分配和根性状协调,而不是简单的土壤-磷有效性梯度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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