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Effects of acclimation and pretreatment with abscisic acid or salicylic acid on tolerance of Trigonobalanus doichangensis to extreme temperatures
Zheng, Y. L.1; Li, W. Q.2; Sun, W. B.3
2015-06-01
发表期刊BIOLOGIA PLANTARUM
卷号59期号:2页码:382-388
摘要The effects of acclimation to cold (4 A degrees C) and heat (36/38/40 A degrees C) on corresponding freezing and heat tolerances of one-year-old Trigonobalanus doichangensis seedlings were studied. In addition, the effects of abscisic acid (ABA) and salicylic acid (SA) pretreatments on the tolerance of this species to temperature extremes were tested. The results show that the content of soluble sugars increased with the duration of acclimation to cold (4 A degrees C), and the relative electrical conductivity and malondialdehyde content increased significantly after 7 d; however, the content of proline did not vary significantly. After acclimation to cold for 3 and 7 d, the semilethal low temperature (LLT50) was 0.8 and 1.1 A degrees C lower, respectively, compared with that of the control. The maximum quantum yield of photosystem II (measured as variable to maximum fluorescence ratio, F-v/F-m) decreased significantly after freezing treatments (-4 to -8 A degrees C), however, less when the plants were pretreated with 1-100 mg dm(-3) ABA. Acclimation to heat did not increase the semilethal high temperature (LHT50). A low concentration (1 mg dm(-3)) of SA increased LHT50, but medium and high concentrations (10 and 100 mg dm(-3)) decreased it. F-v/F-m decreased significantly after a heat shock (45-54 A degrees C). The pretreatment with 1-50 mg dm(-3) SA ameliorated a subsequent heat (48 A degrees C) stress.
关键词Cold Stress Heat Stress Plant Hormones Semilethal Temperature
DOI10.1007/s10535-015-0488-z
收录类别SCI
语种英语
WOS研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000353889400022
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/20681
专题中国西南野生生物种质资源库
作者单位1.Southwest Forestry Univ, State Forestry Adm, Key Lab Biodivers Conservat Southwest China, Kunming 650224, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Kunming Bot Garden, Kunming 650204, Peoples R China
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Zheng, Y. L.,Li, W. Q.,Sun, W. B.. Effects of acclimation and pretreatment with abscisic acid or salicylic acid on tolerance of Trigonobalanus doichangensis to extreme temperatures[J]. BIOLOGIA PLANTARUM,2015,59(2):382-388.
APA Zheng, Y. L.,Li, W. Q.,&Sun, W. B..(2015).Effects of acclimation and pretreatment with abscisic acid or salicylic acid on tolerance of Trigonobalanus doichangensis to extreme temperatures.BIOLOGIA PLANTARUM,59(2),382-388.
MLA Zheng, Y. L.,et al."Effects of acclimation and pretreatment with abscisic acid or salicylic acid on tolerance of Trigonobalanus doichangensis to extreme temperatures".BIOLOGIA PLANTARUM 59.2(2015):382-388.
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