A new dimension of leaf economic spectrum: temporal instability of relationships among genotypes.

Autor: Pahadi P; School of Biology and Ecology, University of Maine, Orono, ME, 04469, USA.; Climate Change Institute, University of Maine, Orono, ME, 04469, USA., Wason J; School of Forest Resources, University of Maine, Orono, ME, 04469, USA.; Maine Agricultural and Forest Experiment Station, University of Maine, Orono, ME, 04469, USA., Annis S; School of Biology and Ecology, University of Maine, Orono, ME, 04469, USA., McGill B; School of Biology and Ecology, University of Maine, Orono, ME, 04469, USA.; Climate Change Institute, University of Maine, Orono, ME, 04469, USA.; Maine Agricultural and Forest Experiment Station, University of Maine, Orono, ME, 04469, USA.; Mitchell Center for Sustainability Solutions, University of Maine, Orono, ME, 04469, USA., Zhang YJ; School of Biology and Ecology, University of Maine, Orono, ME, 04469, USA.; Climate Change Institute, University of Maine, Orono, ME, 04469, USA.; Maine Agricultural and Forest Experiment Station, University of Maine, Orono, ME, 04469, USA.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2024 Dec; Vol. 244 (6), pp. 2210-2224. Date of Electronic Publication: 2024 Oct 18.
DOI: 10.1111/nph.20191
Abstrakt: Leaf economic spectrum (LES) relationships have been studied across many different plant lineages and at different organizational scales. However, the temporal stability of the LES relationships is largely unknown. We used the wild blueberry system with high genotypic diversity to test whether trait-trait relationships across genotypes demonstrate the same LES relationships found in the global database (GLOPNET) and whether they are stable across years. We studied leaf structure, photosynthesis, and leaf nutrients for 16 genotypes of two wild blueberry species semi-naturally grown in a common farm in Maine, USA, across 4 yr. We found substantial variation in leaf structure, physiology, and nutrient traits within and among genotypes, as well as across years in wild blueberries. The LES trait-trait relationships (covariance structure) across genotypes were not always found in all years. The trait syndrome of wild blueberries was shifted by changing environmental conditions over the years. Additionally, traits in 1 yr cannot be used to predict those of another year. Our findings show that LES generally holds among genotypes but is temporally unstable, stressing the significant influence of trait plasticity in response to fluctuating environmental conditions across years, and the importance of temporal dimensions in shaping functional traits and species coexistence.
(© 2024 The Author(s). New Phytologist © 2024 New Phytologist Foundation.)
Databáze: MEDLINE
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