Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/pce.12529 |
Freezing avoidance by supercooling in Olea europaea cultivars: the role of apoplastic water, solute content and cell wall rigidity | |
Arias, Nadia S.1,2; Bucci, Sandra J.1,2; Scholz, Fabian G.1,2; Goldstein, Guillermo1,3,4 | |
通讯作者 | Bucci, Sandra J. |
来源期刊 | PLANT CELL AND ENVIRONMENT
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ISSN | 0140-7791 |
EISSN | 1365-3040 |
出版年 | 2015 |
卷号 | 38期号:10页码:2061-2070 |
英文摘要 | Plants can avoid freezing damage by preventing extracellular ice formation below the equilibrium freezing temperature (supercooling). We used Olea europaea cultivars to assess which traits contribute to avoid ice nucleation at sub-zero temperatures. Seasonal leaf water relations, non-structural carbohydrates, nitrogen and tissue damage and ice nucleation temperatures in different plant parts were determined in five cultivars growing in the Patagonian cold desert. Ice seeding in roots occurred at higher temperatures than in stems and leaves. Leaves of cold acclimated cultivars super-cooled down to -13 degrees C, substantially lower than the minimum air temperatures observed in the study site. During winter, leaf ice nucleation and leaf freezing damage (LT50) occurred at similar temperatures, typical of plant tissues that supercool. Higher leaf density and cell wall rigidity were observed during winter, consistent with a substantial acclimation to sub-zero temperatures. Larger supercooling capacity and lower LT50 were observed in cold-acclimated cultivars with higher osmotically active solute content, higher tissue elastic adjustments and lower apoplastic water. Irreversible leaf damage was only observed in laboratory experiments at very low temperatures, but not in the field. A comparative analysis of closely related plants avoids phylogenetic independence bias in a comparative study of adaptations to survive low temperatures. |
英文关键词 | freezing resistance ice nucleation LT50 non-structural carbohydrate olive |
类型 | Article |
语种 | 英语 |
国家 | Argentina ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000363884200009 |
WOS关键词 | COLD-HARDINESS ; SOLUBLE SUGARS ; FROST TOLERANCE ; ACCLIMATION ; SHOOTS ; MECHANISM ; PRESSURE ; PROTEINS ; SUCROSE ; LEAVES |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/189652 |
作者单位 | 1.Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina; 2.Univ Nacl Patagonia San Juan Bosco, Grp Estudios Biofis & Ecofisiol GEBEF, Dept Biol, Fac Ciencias Nat, RA-9000 Comodoro Rivadavia, Argentina; 3.Univ Buenos Aires, FCEyN, Dept Ecol Genet & Evoluc, LEF, RA-1425 Buenos Aires, DF, Argentina; 4.Univ Miami, Dept Biol, Coral Gables, FL 33124 USA |
推荐引用方式 GB/T 7714 | Arias, Nadia S.,Bucci, Sandra J.,Scholz, Fabian G.,et al. Freezing avoidance by supercooling in Olea europaea cultivars: the role of apoplastic water, solute content and cell wall rigidity[J],2015,38(10):2061-2070. |
APA | Arias, Nadia S.,Bucci, Sandra J.,Scholz, Fabian G.,&Goldstein, Guillermo.(2015).Freezing avoidance by supercooling in Olea europaea cultivars: the role of apoplastic water, solute content and cell wall rigidity.PLANT CELL AND ENVIRONMENT,38(10),2061-2070. |
MLA | Arias, Nadia S.,et al."Freezing avoidance by supercooling in Olea europaea cultivars: the role of apoplastic water, solute content and cell wall rigidity".PLANT CELL AND ENVIRONMENT 38.10(2015):2061-2070. |
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