An Integrative Review of Drivers and Responses of Grassland Phenology under Global Change

IF 6 2区 生物学 Q1 PLANT SCIENCES Critical Reviews in Plant Sciences Pub Date : 2023-05-04 DOI:10.1080/07352689.2023.2210922
Jingtian Lü, Ruzhen Wang, J. Sardans, J. Peñuelas, Yong Jiang, Xingguo Han
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Abstract

Abstract This review synthesizes studies of grassland phenology and associations with plant resource-investment tradeoffs, functional traits, environmental and genetic regulators, genome size (GS), and management practices of nitrogen (N) fertilization, grazing, and mowing. Afterwards, the following five knowledge gaps were identified: (i) there is a lack of clarity of constraints of resource acquisition and allocation strategies, which constitute the plant economics spectrum, on herbaceous species vegetative and reproductive phenology; (ii) evidence is lacking for the tuning of phenology by functional traits via coordination of niche dimensionality and nutrient complementarity in species with contrasting community dominance; (iii) the role of keystone regulatory genes, such as AIL1, FDL1, ABI3, FT, and FRIGIDA, on phenology under contrasting environmental conditions (temperature, water, photoperiod) require confirmation; (iv) there is an urgent need to quantify trait-based and resource-partitioning links between GS and phenology to improve understanding of species coexistence; and (v) effects of N fertilization, grazing and mowing on phenological stages of coexisting species and growing season length, through impacts on inter-specific functional traits, light competition, pollination-syndromes, and carbon-investment economics are unclear. Thus, this review has identified areas of research that need to improve model predictions of the direction and magnitude of plant community responses and evolutionary mechanisms under global environmental change.
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全球变化下草地物候的驱动因素及响应
摘要本文综述了草地物候及其与植物资源投资权衡、功能性状、环境和遗传调控因子、基因组大小以及氮肥、放牧和刈割管理措施之间的关系。随后,发现了以下五个知识空白:(i)在草本物种营养和生殖物候方面,资源获取和分配策略(构成植物经济学谱)的约束缺乏明确;(2)在群落优势对比的物种中,功能性状通过生态位维度和养分互补性的协调来调节物候的证据不足;(iii)在不同环境条件(温度、水、光周期)下,AIL1、FDL1、ABI3、FT和FRIGIDA等关键调控基因在物候学中的作用有待证实;(iv)迫切需要量化GS与物候之间基于性状和资源分配的联系,以提高对物种共存的认识;(5)氮肥、放牧和刈割通过对种间功能性状、光竞争、授粉综合征和碳投资经济学的影响对共存物种物候阶段和生长季节长度的影响尚不清楚。因此,本文确定了需要改进全球环境变化下植物群落响应的方向和幅度以及进化机制的模型预测的研究领域。
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来源期刊
CiteScore
12.90
自引率
1.40%
发文量
15
审稿时长
>12 weeks
期刊介绍: Critical Reviews in Plant Sciences focuses on presenting in-depth and up-to-date reviews of timely and/or cutting-edge subjects in the broad discipline of plant science, ranging from molecular biology/biochemistry through the areas of cell biology, plant pathology and physiology, genetics, classical botany, and ecology, to practical agricultural applications. Articles in the journal provide an up-to-date literature base for researchers and students, pointing the way towards future research needs. The journal is also a significant source of credible, objective information to aid decision makers at all levels.
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