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Regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth

Quantifying intraspecific trait variation (ITV) is crucial for understanding species local adaptation and regional distribution. Intraspecific seed mass variation (ITVsm) is expected to vary with environmental gradients or co-vary with related biotic attributes, but these relationships are not well...

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Autores principales: Kang, Xiaomei, Zhou, Jieyang, , Abuman, Liu, Yanjun, Zhang, Shiting, Liu, Wei, Bu, Haiyan, Qi, Wei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9128389/
https://www.ncbi.nlm.nih.gov/pubmed/35619737
http://dx.doi.org/10.1093/aobpla/plac013
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author Kang, Xiaomei
Zhou, Jieyang
, Abuman
Liu, Yanjun
Zhang, Shiting
Liu, Wei
Bu, Haiyan
Qi, Wei
author_facet Kang, Xiaomei
Zhou, Jieyang
, Abuman
Liu, Yanjun
Zhang, Shiting
Liu, Wei
Bu, Haiyan
Qi, Wei
author_sort Kang, Xiaomei
collection PubMed
description Quantifying intraspecific trait variation (ITV) is crucial for understanding species local adaptation and regional distribution. Intraspecific seed mass variation (ITVsm) is expected to vary with environmental gradients or co-vary with related biotic attributes, but these relationships are not well known in a multispecies space. We performed interspecific and phylogenetic analyses to evaluate the relative power of three species biotic attributes and four niche breadth traits in explaining ITVsm variation for 434 eastern Qinghai–Tibetan species. We showed a positive relationship between species’ ITVsm and their niche breadth in the light, moisture and disturbance dimensions, supporting the idea that high ITV allows species to match their traits to different habitat conditions and thus to distribute in a wide range of environments. However, we did find significant direct effect of species’ thermal niche on individual seed mass variation. Meanwhile, we showed significant effects of seed dispersal mode, but not of life form and pollination type, on ITVsm. This suggests that the covariation or co-evolution between seed and disperser was related to the pattern and magnitude of ITVsm, but not to plant lifespan, the quality and allocation pattern of available resources and the availability of pollination vector. Lastly, all multivariate models showed a significant combined contribution of species’ biotic attributes and niche breadth to their ITVsm, implying that intrinsic biotic limitations and extrinsic abiotic pressures may operate simultaneously in controlling regional-scale intraspecific seed development.
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spelling pubmed-91283892022-05-25 Regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth Kang, Xiaomei Zhou, Jieyang , Abuman Liu, Yanjun Zhang, Shiting Liu, Wei Bu, Haiyan Qi, Wei AoB Plants Studies Quantifying intraspecific trait variation (ITV) is crucial for understanding species local adaptation and regional distribution. Intraspecific seed mass variation (ITVsm) is expected to vary with environmental gradients or co-vary with related biotic attributes, but these relationships are not well known in a multispecies space. We performed interspecific and phylogenetic analyses to evaluate the relative power of three species biotic attributes and four niche breadth traits in explaining ITVsm variation for 434 eastern Qinghai–Tibetan species. We showed a positive relationship between species’ ITVsm and their niche breadth in the light, moisture and disturbance dimensions, supporting the idea that high ITV allows species to match their traits to different habitat conditions and thus to distribute in a wide range of environments. However, we did find significant direct effect of species’ thermal niche on individual seed mass variation. Meanwhile, we showed significant effects of seed dispersal mode, but not of life form and pollination type, on ITVsm. This suggests that the covariation or co-evolution between seed and disperser was related to the pattern and magnitude of ITVsm, but not to plant lifespan, the quality and allocation pattern of available resources and the availability of pollination vector. Lastly, all multivariate models showed a significant combined contribution of species’ biotic attributes and niche breadth to their ITVsm, implying that intrinsic biotic limitations and extrinsic abiotic pressures may operate simultaneously in controlling regional-scale intraspecific seed development. Oxford University Press 2022-03-30 /pmc/articles/PMC9128389/ /pubmed/35619737 http://dx.doi.org/10.1093/aobpla/plac013 Text en © The Author(s) 2022. Published by Oxford University Press on behalf of the Annals of Botany Company. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Studies
Kang, Xiaomei
Zhou, Jieyang
, Abuman
Liu, Yanjun
Zhang, Shiting
Liu, Wei
Bu, Haiyan
Qi, Wei
Regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth
title Regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth
title_full Regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth
title_fullStr Regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth
title_full_unstemmed Regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth
title_short Regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth
title_sort regional gradients in intraspecific seed mass variation are associated with species biotic attributes and niche breadth
topic Studies
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9128389/
https://www.ncbi.nlm.nih.gov/pubmed/35619737
http://dx.doi.org/10.1093/aobpla/plac013
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