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Temporal dynamics of physiological responses of
Hypnum plumaeforme to low temperature- Acta Scientiarum Naturalium Universitatis Sunyatseni Vol. 62, Issue 1, Pages: 124-130(2023)
- 作者机构：
1.广东省热带亚热带植物资源重点实验室 / 中山大学生态学院，广东 深圳 518107
2.广东封开黑石顶省级自然保护区管理处，广东 肇庆 526536
3.江西省林业科技推广和宣传教育中心，江西 南昌 330038
- 作者简介：
- 基金信息：国家自然科学基金(31070470;31370490)
DOI：10.13471/j.cnki.acta.snus.2022E008
CLC： Q945.79;Q948.112Published：25 January 2023，
Published Online：06 June 2022，
Received：22 March 2022，
Accepted：25 April 2022
扫 描 看 全 文
关易云,雷纯义,王倩等.大灰藓低温响应的时间动态[J].中山大学学报(自然科学版),2023,62(01):124-130.
GUAN Yiyun,LEI Chunyi,WANG Qian,et al.Temporal dynamics of physiological responses of Hypnum plumaeforme to low temperature[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(01):124-130.
关易云,雷纯义,王倩等.大灰藓低温响应的时间动态[J].中山大学学报(自然科学版),2023,62(01):124-130. DOI： 10.13471/j.cnki.acta.snus.2022E008.
GUAN Yiyun,LEI Chunyi,WANG Qian,et al.Temporal dynamics of physiological responses of Hypnum plumaeforme to low temperature[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(01):124-130. DOI： 10.13471/j.cnki.acta.snus.2022E008.
摘要
以广泛分布的大灰藓（
Hypnum plumaeforme
）作为研究对象，研究其对低温响应的时间动态特征。结果显示：丙二醛含量在低温处理12 h时上升，此后丙二醛含量降低至初始水平，而过氧化氢含量在实验处理期间呈明显波动状态；低温抑制了大灰藓超氧化物歧化酶的活性，但低温处理植物中过氧化氢酶和过氧化物歧化酶活性整体上略高于对照；可溶性糖在低温处理84 h后明显高于对照，但低温处理导致脯氨酸含量持续下降；植物体内脱落酸、乙烯、水杨酸和茉莉酸含量在低温处理12 h时均明显升高，但在36 h时降低，此后各激素含量逐步上升并维持在较高水平。研究结果表明植物的抗逆激素迅速参与植物胁迫响应的调控，而可溶性物质积累的响应速度相对较慢。
Abstract
A wide distributed moss species
Hypnum plumaeforme
was selected as a research material to investigate the temporal dynamics of its responses to mild low temperature （LT）. The results showed that LT induced a significant increase in the content of malondialdehyde at 12 h， and then the content decreased to the initial level， while H
2
O
2
content fluctuated during the experiment period. LT inhibited the activity of superoxide dismutase，but the activities of catalase and guaiacol peroxidase in LT samples were higher than in control generally. Soluble sugars were accumulated after 84h of LT treatment， while the content of proline was continuously decreased during the treatment. The contents of several hormones including abscisic acid， ethylene， salicylic acid and jasmonates were accumulated in the LT treated at 12 h， but decreased at 36 h， and then increased again gradually and maintained at relatively high levels. These results suggested that the hormones were actively involved in the anti-stress regulation， while the compatible substances respond to LT were in a relatively slower efficiency.
关键词
大灰藓（Hypnum plumaeforme）低温生理响应时间动态
Keywords
Hypnum plumaeformelow temperaturephysiological responsestime dynamic
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