Journal Article

Plant trait networks reveal adaptation strategies in the drylands of China

Sun, Ying, Deng, Jianming, Akram, Muhammad Adnan, Zhang, Liang, Ran, Jinzhi, Zhang, Yahui, Ji, Mingfei, Xiong, Junlan, Li, Hailin, Degen, Abraham Allan, Hu, Weigang, Dong, Longwei, Wang, Xiaoting

2023

Overview

Background Plants accomplish multiple functions by the interrelationships between functional traits. Clarifying the complex relationships between plant traits would enable us to better understand how plants employ different strategies to adapt to the environment. Although increasing attention is being paid to plant traits, few studies focused on the adaptation to aridity through the relationship among multiple traits. We established plant trait networks (PTNs) to explore the interdependence of sixteen plant traits across drylands. Results Our results revealed significant differences in PTNs among different plant life-forms and different levels of aridity. Trait relationships for woody plants were weaker, but were more modularized than for herbs. Woody plants were more connected in economic traits, whereas herbs were more connected in structural traits to reduce damage caused by drought. Furthermore, the correlations between traits were tighter with higher edge density in semi-arid than in arid regions, suggesting that resource sharing and trait coordination are more advantageous under low drought conditions. Importantly, our results demonstrated that stem phosphorus concentration (SPC) was a hub trait correlated with other traits across drylands. Conclusions The results demonstrate that plants exhibited adaptations to the arid environment by adjusting trait modules through alternative strategies. PTNs provide a new insight into understanding the adaptation strategies of plants to drought stress based on the interdependence among plant functional traits.

• Publisher: BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
• Subject: Acclimatization / Acclimatization (Plants) / Adaptation / Adaptation strategies / Adaptation, Physiological / Agriculture / Arid environment / Arid environments / Arid lands / Arid regions / Arid zones / Aridity / Biomedical and Life Sciences / Botanical research / Carbon / China / Climate change / Desert Climate / Drought / dry environmental conditions / Ecosystems / Environmental economics / Functionals / Herbs / Interdependence / Life Sciences / Natural history / Nitrogen / Nutrients / Phosphorus / Plant functional traits / Plant Leaves - chemistry / Plant Sciences / Plant traits networks / Plants / Plants (botany) / Tree Biology / water stress / Woody plants