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Quantitative genetic architecture of adaptive phenology traits in the deciduous tree, Populus trichocarpa (Torr. And Gray)

Richards, Thomas and Karacic, Almir and Apuli, Rami-Petteri and Weih, Martin and Ingvarsson, Pär and Rönnberg Wästljung, Ann-Christin (2020). Quantitative genetic architecture of adaptive phenology traits in the deciduous tree, Populus trichocarpa (Torr. And Gray). Heredity. 125 , 449-458
[Journal article]

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Abstract

In a warming climate, the ability to accurately predict and track shifting environmental conditions will be fundamental for plant survival. Environmental cues define the transitions between growth and dormancy as plants synchronise development with favourable environmental conditions, however these cues are predicted to change under future climate projections which may have profound impacts on tree survival and growth. Here, we use a quantitative genetic approach to estimate the genetic basis of spring and autumn phenology inPopulus trichocarpato determine this species capacity for climate adaptation. We measured bud burst, leaf coloration, and leaf senescence traits across two years (2017-2018) and combine these observations with measures of lifetime growth to determine how genetic correlations between phenology and growth may facilitate or constrain adaptation. Timing of transitions differed between years, although we found strong cross year genetic correlations in all traits, suggesting that genotypes respond in consistent ways to seasonal cues. Spring and autumn phenology were correlated with lifetime growth, where genotypes that burst leaves early and shed them late had the highest lifetime growth. We also identified substantial heritable variation in the timing of all phenological transitions (h(2) = 0.5-0.8) and in lifetime growth (h(2) = 0.8). The combination of additive variation and favourable genetic correlations in phenology traits suggests that populations of cultivated varieties of P. Trichocarpa may have the capability to adapt their phenology to climatic changes without negative impacts on growth.

Authors/Creators:Richards, Thomas and Karacic, Almir and Apuli, Rami-Petteri and Weih, Martin and Ingvarsson, Pär and Rönnberg Wästljung, Ann-Christin
Title:Quantitative genetic architecture of adaptive phenology traits in the deciduous tree, Populus trichocarpa (Torr. And Gray)
Series Name/Journal:Heredity
Year of publishing :2020
Volume:125
Page range:449-458
Number of Pages:10
ISSN:0018-067X
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Genetics (medical genetics to be 30107 and agricultural genetics to be 40402)
URN:NBN:urn:nbn:se:slu:epsilon-p-107693
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107693
Additional ID:
Type of IDID
DOI10.1038/s41437-020-00363-z
Web of Science (WoS)000567366300001
ID Code:18723
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Plant Biology and Forest Genetics (until 131231)
(NL, NJ) > Dept. of Crop Production Ecology
Deposited By: SLUpub Connector
Deposited On:24 Nov 2020 14:23
Metadata Last Modified:15 Jan 2021 19:45

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