The sensitivity of ginkgo leaf unfolding to the temperature and photoperiod decreases with increasing elevation

Wu, Zhaofei; Lin, Chen‐Feng; Wang, Shuxin; Gong, Yufeng; Zhao, Yunpeng; Tang, Jing; Boeck, Hans J. De; Vitasse, Yann; Fu, Yulan

doi:10.1016/j.agrformet.2022.108840

Cited by 9 publications

(12 citation statements)

References 55 publications

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“…Consistent with previous studies, we observed significant advances in budburst with warming ( Fu et al, 2013 ; Hänninen, 2016 ; Wu et al, 2022b ). In addition to temperature, daylength has been suggested as another dominant factor regulating budburst dates ( Basler and Körner, 2012 ; Way and Montgomery, 2015 ; Fu et al, 2019a ).…”

Section: Discussionsupporting

confidence: 92%

“…Six twigs, approximately 40 cm in length, were cut from each individual. The twigs were cleaned and disinfected with commercial hypochlorite solution following previous studies ( Du et al, 2019 ; Wu et al, 2022b ) and then cultivated in 395 ml plastic bottles filled with tap water. Every 2 weeks from the start of the experiment, the tap water was changed in bottles, the twigs were washed to remove mold grown, and their basal parts were trimmed by about 2 cm to avoid vessel occlusion.…”

Section: Methodsmentioning

confidence: 99%

“…As plants continue to leaf out earlier, daylength may become an increasingly important factor, limiting warming-induced advances in spring phenology ( Basler and Körner, 2012 ; Way and Montgomery, 2015 ; Fu et al, 2019a ). However, how daylength and temperature interact to trigger spring phenology, and how these interactive signals differ across spatial gradients, remain largely unknown ( Zohner et al, 2016 ; Piao et al, 2019a ; Wu et al, 2022b ).…”

Section: Introductionmentioning

confidence: 99%

“…The daylength effect is species-specific ( Basler and Körner, 2012 ; Zohner and Renner, 2015 ), and previous experimental studies found a wide range of responses from being insensitive to daylength to showing no budburst at all under short days ( Zohner and Renner, 2015 ; Zohner et al, 2016 ). These studies mostly focused on inter-specific comparisons within angiosperms, while population-level studies that also involve gymnosperms are scarce (but see Kumar and Sati, 2016 ; Pan et al, 2021 ; Wu et al, 2022b ).…”

Section: Introductionmentioning

confidence: 99%

“…Responses of spring phenology to climate change can thus be expected to differ substantially across spatial gradients as a result of population- and species-level differences in the environmental stimuli governing phenological timing for both deciduous broad-leaved ( Lechowicz, 1984 ; Peaucelle et al, 2019 ; Zhuqiu et al, 2020 ) and evergreen conifer species ( Hänninen, 1995 ; Salmela et al, 2011 , 2013 ; Ma et al, 2018 ). For example, Wu et al (2022b) found that the sensitivity of spring phenology to the climate drivers such as temperature and daylength decreases with elevation. However, similar temperature sensitivity was found along elevation among geographically separated populations of European tree species ( Vitasse et al, 2009 ).…”

Section: Introductionmentioning

confidence: 99%

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Spatial Difference of Interactive Effect Between Temperature and Daylength on Ginkgo Budburst

Wang²,

Fu³

et al. 2022

Front. Plant Sci.

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Climate warming-induced shifts in spring phenology have substantially affected the structure and function of terrestrial ecosystems and global biogeochemical cycles. Spring phenology is primarily triggered by spring temperature and is also affected by daylength and winter chilling, yet the relative importance of these cues across spatial gradients remains poorly understood. Here, we conducted a manipulative experiment with two daylength and three temperature treatments to investigate spatial differences in the response of ginkgo budburst to temperature and daylength, using twigs collected at three sites across a spatial gradient: a control site at a low latitude and low elevation on Tianmu Mountain (TMlow), a low latitude and high elevation site on Tianmu Mountain (TMhigh), and a high latitude site on Jiufeng mountain (JF). The mechanisms were also tested using in situ phenological observations of ginkgo along latitudes in China. We found that, compared to TMlow individuals, budburst dates occurred 12.6 (JF) and 7.7 (TMhigh) days earlier in high-latitude and high-elevation individuals when exposed to the same temperature and daylength treatments. Importantly, daylength only affected budburst at low latitudes, with long days (16 h) advancing budburst in low-latitude individuals by, on average, 8.1 days relative to short-day (8 h) conditions. This advance was most pronounced in low-elevation/latitude individuals (TMlow = 9.6 days; TMhigh = 6.7 days; JF = 1.6 days). In addition, we found that the temperature sensitivity of budburst decreased from 3.4 to 2.4 days °C−1 along latitude and from 3.4 to 2.5 days °C−1 along elevation, respectively. The field phenological observations verified the experimental results. Our findings provide empirical evidence of spatial differences in the relative effects of spring temperature and daylength on ginkgo budburst, which improved our understanding of spatial difference in phenological changes and the responses of terrestrial ecosystem to climate change.

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