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Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana
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| Zeitschriftentitel: | Canadian Journal of Forest Research |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Canadian Journal of Forest Research, 48, 2018, 1, S. 68-76 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Canadian Science Publishing
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| Schlagwörter: |
| author_facet |
Yu, Lei Han, Yan Jiang, Yonglei Dong, Tingfa Lei, Yanbao Yu, Lei Han, Yan Jiang, Yonglei Dong, Tingfa Lei, Yanbao |
|---|---|
| author |
Yu, Lei Han, Yan Jiang, Yonglei Dong, Tingfa Lei, Yanbao |
| spellingShingle |
Yu, Lei Han, Yan Jiang, Yonglei Dong, Tingfa Lei, Yanbao Canadian Journal of Forest Research Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana Ecology Forestry Global and Planetary Change |
| author_sort |
yu, lei |
| spelling |
Yu, Lei Han, Yan Jiang, Yonglei Dong, Tingfa Lei, Yanbao 0045-5067 1208-6037 Canadian Science Publishing Ecology Forestry Global and Planetary Change http://dx.doi.org/10.1139/cjfr-2017-0259 <jats:p> Bud burst is one of the most observable phenological stages in tree species, and its responses to environmental factors are found to be species-specific. Nevertheless, for dioecious plants, whether the bud burst responses are sex specific remains an open question, as do the underlying physiological mechanisms. Here, we investigated the effect of elevated temperature (+2 °C) and drought (30% field capacity) during December–March on bud development, gas exchange, water and nitrogen status, and carbohydrate metabolism in female and male Populus cathayana to understand how nongrowing season warming and drought modifies physiological and phenological traits. Our results showed that at ambient temperature, males experienced earlier bud burst than females. Winter warming significantly delayed bud burst and even synchronized it for both sexes because of the greater responsiveness of males. Although drought exerted little effect on the timing of bud burst, it significantly reduced bud fresh mass and limited bud growth by decreasing gas exchange capacity and nonstructural carbohydrate (NSC) accumulation; moreover, females were more affected by drought stress. The significant sex × watering × temperature interactions for δ<jats:sup>13</jats:sup>C and NSC indicate that sexual dimorphism in these condition-specific traits would increase along the environmental gradients, implying contrasting life history strategies in different ecological scenarios. The convergence in the time for bud burst caused by elevated temperature might exaggerate the competition among males, thus influencing the sex ratio, structure, and functioning of P. cathayana populations. </jats:p> Sex-specific responses of bud burst and early development to nongrowing season warming and drought in <i>Populus cathayana</i> Canadian Journal of Forest Research |
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| title |
Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_unstemmed |
Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_full |
Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_fullStr |
Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_full_unstemmed |
Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_short |
Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_sort |
sex-specific responses of bud burst and early development to nongrowing season warming and drought in <i>populus cathayana</i> |
| topic |
Ecology Forestry Global and Planetary Change |
| url |
http://dx.doi.org/10.1139/cjfr-2017-0259 |
| publishDate |
2018 |
| physical |
68-76 |
| description |
<jats:p> Bud burst is one of the most observable phenological stages in tree species, and its responses to environmental factors are found to be species-specific. Nevertheless, for dioecious plants, whether the bud burst responses are sex specific remains an open question, as do the underlying physiological mechanisms. Here, we investigated the effect of elevated temperature (+2 °C) and drought (30% field capacity) during December–March on bud development, gas exchange, water and nitrogen status, and carbohydrate metabolism in female and male Populus cathayana to understand how nongrowing season warming and drought modifies physiological and phenological traits. Our results showed that at ambient temperature, males experienced earlier bud burst than females. Winter warming significantly delayed bud burst and even synchronized it for both sexes because of the greater responsiveness of males. Although drought exerted little effect on the timing of bud burst, it significantly reduced bud fresh mass and limited bud growth by decreasing gas exchange capacity and nonstructural carbohydrate (NSC) accumulation; moreover, females were more affected by drought stress. The significant sex × watering × temperature interactions for δ<jats:sup>13</jats:sup>C and NSC indicate that sexual dimorphism in these condition-specific traits would increase along the environmental gradients, implying contrasting life history strategies in different ecological scenarios. The convergence in the time for bud burst caused by elevated temperature might exaggerate the competition among males, thus influencing the sex ratio, structure, and functioning of P. cathayana populations. </jats:p> |
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| author | Yu, Lei, Han, Yan, Jiang, Yonglei, Dong, Tingfa, Lei, Yanbao |
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| description | <jats:p> Bud burst is one of the most observable phenological stages in tree species, and its responses to environmental factors are found to be species-specific. Nevertheless, for dioecious plants, whether the bud burst responses are sex specific remains an open question, as do the underlying physiological mechanisms. Here, we investigated the effect of elevated temperature (+2 °C) and drought (30% field capacity) during December–March on bud development, gas exchange, water and nitrogen status, and carbohydrate metabolism in female and male Populus cathayana to understand how nongrowing season warming and drought modifies physiological and phenological traits. Our results showed that at ambient temperature, males experienced earlier bud burst than females. Winter warming significantly delayed bud burst and even synchronized it for both sexes because of the greater responsiveness of males. Although drought exerted little effect on the timing of bud burst, it significantly reduced bud fresh mass and limited bud growth by decreasing gas exchange capacity and nonstructural carbohydrate (NSC) accumulation; moreover, females were more affected by drought stress. The significant sex × watering × temperature interactions for δ<jats:sup>13</jats:sup>C and NSC indicate that sexual dimorphism in these condition-specific traits would increase along the environmental gradients, implying contrasting life history strategies in different ecological scenarios. The convergence in the time for bud burst caused by elevated temperature might exaggerate the competition among males, thus influencing the sex ratio, structure, and functioning of P. cathayana populations. </jats:p> |
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| spelling | Yu, Lei Han, Yan Jiang, Yonglei Dong, Tingfa Lei, Yanbao 0045-5067 1208-6037 Canadian Science Publishing Ecology Forestry Global and Planetary Change http://dx.doi.org/10.1139/cjfr-2017-0259 <jats:p> Bud burst is one of the most observable phenological stages in tree species, and its responses to environmental factors are found to be species-specific. Nevertheless, for dioecious plants, whether the bud burst responses are sex specific remains an open question, as do the underlying physiological mechanisms. Here, we investigated the effect of elevated temperature (+2 °C) and drought (30% field capacity) during December–March on bud development, gas exchange, water and nitrogen status, and carbohydrate metabolism in female and male Populus cathayana to understand how nongrowing season warming and drought modifies physiological and phenological traits. Our results showed that at ambient temperature, males experienced earlier bud burst than females. Winter warming significantly delayed bud burst and even synchronized it for both sexes because of the greater responsiveness of males. Although drought exerted little effect on the timing of bud burst, it significantly reduced bud fresh mass and limited bud growth by decreasing gas exchange capacity and nonstructural carbohydrate (NSC) accumulation; moreover, females were more affected by drought stress. The significant sex × watering × temperature interactions for δ<jats:sup>13</jats:sup>C and NSC indicate that sexual dimorphism in these condition-specific traits would increase along the environmental gradients, implying contrasting life history strategies in different ecological scenarios. The convergence in the time for bud burst caused by elevated temperature might exaggerate the competition among males, thus influencing the sex ratio, structure, and functioning of P. cathayana populations. </jats:p> Sex-specific responses of bud burst and early development to nongrowing season warming and drought in <i>Populus cathayana</i> Canadian Journal of Forest Research |
| spellingShingle | Yu, Lei, Han, Yan, Jiang, Yonglei, Dong, Tingfa, Lei, Yanbao, Canadian Journal of Forest Research, Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana, Ecology, Forestry, Global and Planetary Change |
| title | Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_full | Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_fullStr | Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_full_unstemmed | Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_short | Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| title_sort | sex-specific responses of bud burst and early development to nongrowing season warming and drought in <i>populus cathayana</i> |
| title_unstemmed | Sex-specific responses of bud burst and early development to nongrowing season warming and drought in Populus cathayana |
| topic | Ecology, Forestry, Global and Planetary Change |
| url | http://dx.doi.org/10.1139/cjfr-2017-0259 |