Phenotypic Plasticity and Local Adaptation of Leaf Cuticular Waxes Favor Perennial Alpine Herbs under Climate Change

被引:2
|
作者
Yao, Luhua [1 ,2 ]
Wang, Dengke [2 ]
Wang, Dangjun [2 ]
Li, Shixiong [3 ]
Chen, Youjun [4 ]
Guo, Yanjun [1 ]
机构
[1] Qingdao Agr Univ, Coll Grassland Sci, Qingdao 266109, Peoples R China
[2] Southwest Univ, Coll Agron & Biotechnol, Chongqing 400716, Peoples R China
[3] Qinghai Acad Anim Sci & Vet Med, Xining 810016, Peoples R China
[4] Southwest Minzu Univ, Inst Qinghai Tibetan Plateau, Chengdu 610041, Peoples R China
来源
PLANTS-BASEL | 2022年 / 11卷 / 01期
基金
中国国家自然科学基金;
关键词
adaptation; alpine meadow plants; climate change; cuticular waxes; phenotypic plasticity; INTRA-SPECIFIC VARIATION; RESPONSES; EVOLUTIONARY; TRAITS; STRESS; GRADIENT; LEAVES; CARBON; PLANTS;
D O I
10.3390/plants11010120
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Six perennial herbs (Plantago asiatica, Polygonum viviparum, Anaphalis lactea, Kobresia humilis, Leontopodium nanum and Potentilla chinensis) widely distributed in alpine meadows were reciprocally transplanted at two sites in eastern edge of Qinghai-Tibetan Plateau, Hongyuan (3434 m, 2.97 degrees C, 911 mm) and Qilian (3701 m, 2.52 degrees C, 472 mm), aiming to evaluate the responses of alpine plants to changing environments. When plants were transplanted from Hongyuan to Qilian, most plant species showed a decrease of total wax coverage in first year and reverse trend was observed for some plant species in second year. However, when plants were transplanted from Qilian to Hongyuan, the response of total wax coverage differed greatly between plant species. When compared with those in first year, plasticity index of average chain length of alkane decreased whereas carbon preference index of alkane increased at both Hongyuan and Qilian in second year. The total wax coverage differed between local and transplanted plants, suggesting both environmental and genetic factors controlled the wax depositions. Structural equation modeling indicated that co-variations existed between leaf cuticular waxes and leaf functional traits. These results suggest that alpine herbs adjust both wax depositions and chain length distributions to adapt to changing environment, showing climate adaptations.
引用
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页数:17
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