The sensitivity of ginkgo leaf unfolding to the temperature and photoperiod decreases with increasing elevation
Wu, Zhaofei ; Lin, Chen Feng LU ; Wang, Shuxin ; Gong, Yufeng ; Zhao, Yun Peng ; Tang, Jing LU
; De Boeck, Hans J.
; Vitasse, Yann
and Fu, Yongshuo H.
(2022)
In Agricultural and Forest Meteorology
315.
- Abstract
Climate change substantially affects plant phenology, resulting in earlier vegetation onset across temperate and boreal regions. Phenological shifts caused by warming may alter species interactions across trophic levels because of species-specific responses, and influence the reproductive success of dioecious species if the phenological sensitivity to warming (ST) differs between genders. We used twigs collected from male and female gingko trees at three elevations on Tianmu Mountain in eastern China. The twigs were cultivated in climate chambers to determine the effects of three temperatures (10, 15, and 20 °C) and two photoperiods (8 and 16 h). We observed slightly earlier leaf unfolding dates in male twigs (1 day), and a... (More)
Climate change substantially affects plant phenology, resulting in earlier vegetation onset across temperate and boreal regions. Phenological shifts caused by warming may alter species interactions across trophic levels because of species-specific responses, and influence the reproductive success of dioecious species if the phenological sensitivity to warming (ST) differs between genders. We used twigs collected from male and female gingko trees at three elevations on Tianmu Mountain in eastern China. The twigs were cultivated in climate chambers to determine the effects of three temperatures (10, 15, and 20 °C) and two photoperiods (8 and 16 h). We observed slightly earlier leaf unfolding dates in male twigs (1 day), and a higher heat requirement (growing degree hours) for leaf unfolding in female (14,334 ± 588 °C) compared to male twigs (13,874 ± 551 °C). Similar responses to temperature (ST = 3.7 days °C−1), photoperiod and elevation were observed across genders. The long photoperiod treatment shortened the time to leaf unfolding by 9.1 days, but temperature and photoperiod effects on leaf unfolding differed significantly depending on the elevation of the donor trees. Specifically, ST was higher (4.17 days °C−1) and the photoperiod effect on ST was larger (decreased by 1.15 days °C−1) at the lowest elevation than at the higher elevations (ST = 3.26 days °C−1; decreased by 0.48 days °C−1). This may be related to environment-induced local adaptations and self-protection mechanisms of trees at high elevations to avoid frost damage. Our results indicate that the photoperiod and genetic adaptations to local environments influenced the warming-induced phenological responses in ginkgo, but these responses were generally similar between the genders. For a given species, individuals in different climates may exhibit different phenological responses to higher temperatures, with individuals in warmer regions likely becoming increasingly limited by the photoperiod as the climate warms further.
(Less)
- author
- Wu, Zhaofei
; Lin, Chen Feng
LU
; Wang, Shuxin
; Gong, Yufeng
; Zhao, Yun Peng
; Tang, Jing
LU
; De Boeck, Hans J.
; Vitasse, Yann
and Fu, Yongshuo H.
- organization
- publishing date
- 2022-03-15
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Climate change, Elevation, Gymnosperm, Photoperiod, Temperature sensitivity, Twig cutting experiment
- in
- Agricultural and Forest Meteorology
- volume
- 315
- article number
- 108840
- publisher
- Elsevier
- external identifiers
-
- scopus:85123413831
- ISSN
- 0168-1923
- DOI
- 10.1016/j.agrformet.2022.108840
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2022 Elsevier B.V.
- id
- 181122cc-554f-40b7-9c94-97a18145e335
- date added to LUP
- 2022-02-15 16:59:40
- date last changed
- 2022-04-25 21:42:27
@article{181122cc-554f-40b7-9c94-97a18145e335,
abstract = {{<p>Climate change substantially affects plant phenology, resulting in earlier vegetation onset across temperate and boreal regions. Phenological shifts caused by warming may alter species interactions across trophic levels because of species-specific responses, and influence the reproductive success of dioecious species if the phenological sensitivity to warming (S<sub>T</sub>) differs between genders. We used twigs collected from male and female gingko trees at three elevations on Tianmu Mountain in eastern China. The twigs were cultivated in climate chambers to determine the effects of three temperatures (10, 15, and 20 °C) and two photoperiods (8 and 16 h). We observed slightly earlier leaf unfolding dates in male twigs (1 day), and a higher heat requirement (growing degree hours) for leaf unfolding in female (14,334 ± 588 °C) compared to male twigs (13,874 ± 551 °C). Similar responses to temperature (S<sub>T</sub> = 3.7 days °C<sup>−1</sup>), photoperiod and elevation were observed across genders. The long photoperiod treatment shortened the time to leaf unfolding by 9.1 days, but temperature and photoperiod effects on leaf unfolding differed significantly depending on the elevation of the donor trees. Specifically, S<sub>T</sub> was higher (4.17 days °C<sup>−1</sup>) and the photoperiod effect on S<sub>T</sub> was larger (decreased by 1.15 days °C<sup>−1</sup>) at the lowest elevation than at the higher elevations (S<sub>T</sub> = 3.26 days °C<sup>−1</sup>; decreased by 0.48 days °C<sup>−1</sup>). This may be related to environment-induced local adaptations and self-protection mechanisms of trees at high elevations to avoid frost damage. Our results indicate that the photoperiod and genetic adaptations to local environments influenced the warming-induced phenological responses in ginkgo, but these responses were generally similar between the genders. For a given species, individuals in different climates may exhibit different phenological responses to higher temperatures, with individuals in warmer regions likely becoming increasingly limited by the photoperiod as the climate warms further.</p>}},
author = {{Wu, Zhaofei and Lin, Chen Feng and Wang, Shuxin and Gong, Yufeng and Zhao, Yun Peng and Tang, Jing and De Boeck, Hans J. and Vitasse, Yann and Fu, Yongshuo H.}},
issn = {{0168-1923}},
keywords = {{Climate change; Elevation; Gymnosperm; Photoperiod; Temperature sensitivity; Twig cutting experiment}},
language = {{eng}},
month = {{03}},
publisher = {{Elsevier}},
series = {{Agricultural and Forest Meteorology}},
title = {{The sensitivity of ginkgo leaf unfolding to the temperature and photoperiod decreases with increasing elevation}},
url = {{http://dx.doi.org/10.1016/j.agrformet.2022.108840}},
doi = {{10.1016/j.agrformet.2022.108840}},
volume = {{315}},
year = {{2022}},
}