外源褪黑素对NaCl胁迫下草莓幼苗生理特性的缓解效应

doi:10.6048/j.issn.1001-4330.2023.10.018

新疆农业科学 ›› 2023, Vol. 60 ›› Issue (10): 2486-2495.DOI: 10.6048/j.issn.1001-4330.2023.10.018

• 园艺特产·农产品加工工程 • 上一篇下一篇

外源褪黑素对NaCl胁迫下草莓幼苗生理特性的缓解效应

马媛媛¹(), 李刚², 何旺³, 赵宝龙¹(), 鲁倩君¹, 陈丽靓¹, 刘迎¹

1.石河子大学农学院/特色果蔬栽培生理与种质资源利用兵团重点实验室,新疆石河子 832000
2.中国农业科学院郑州果树研究所,郑州 450009
3.重庆市黔江区农业技术服务中心,重庆 400000

收稿日期:2023-02-11 出版日期:2023-10-20 发布日期:2023-11-01
通信作者: 赵宝龙(1976-),男,新疆人,研究员,研究方向为园艺植物栽培与育种,(E-mail)1504201794@qq.com
作者简介:马媛媛(1998-)女,新疆人,硕士研究生,研究方向为草莓生理生态,(E-mail)2352156001@qq.com
基金资助:
新疆果树类品种筛选及技术示范推广(Y2021XK14)

Alleviating effect of exogenous melatonin on strawberry seedling under NaCl stress

MA Yuanyuan¹(), LI Gang², HE Wang³, ZHAO Baolong¹(), LU Qianjun¹, CHEN Liliang¹, LIU Ying¹

1. College of Agronomy,Shihezi University/Key Laboratory of Physidogy and Germplasm Resource Utili zation of Special Fruit and Vegetable Cultivation in the Corps,Shihezi Xinjiang 832000, China
2. Zhengzhou Fruit Tree Research Institute, Chinese Academy of Agricultural Sciences,Zhengzhou 450009,China
3. Chongqing Qionjang District Agricultural Technology Service Center,Chongqing 400000,China

Received:2023-02-11 Online:2023-10-20 Published:2023-11-01
Correspondence author: ZHAO Baolong(1976-)male,Shihezi,Xinjiang,associate professor,research direction: the horticultural plant cultivation and breeding,(E-mail)1504201794@qq.com
Supported by:
Selection of Fruit Tree Varieties and Technical Demonstration and Popularization in Xinjiang(Y2021XK14)

摘要/Abstract

摘要：

【目的】 研究NaCl胁迫下不同浓度褪黑素对草莓幼苗生长指标、光合色素含量、光合特性、叶绿素荧光特性和抗氧化酶活性的影响,为分析褪黑素缓解草莓NaCl胁迫的最适浓度提供理论依据。【方法】 以甜查理为材料,测定幼苗在5 g/L NaCl处理下,外源施加不同浓度褪黑素(0、50、100、150和200 μmol/L),测定第3、6和9 d的生长指标、光合色素含量、光合特性、叶绿素荧光和抗氧化酶活性。【结果】 NaCl胁迫下草莓幼苗的生长指标、光合色素含量、光合特性、叶绿素荧光特性和抗氧化酶活性显著降低。外源施加50、100、150和200 μmol/L浓度的褪黑素可不同程度的增加NaCl胁迫下草莓幼苗叶片生长指标、光合色素含量、光合特性、叶绿素荧光特性和抗氧化酶活性。褪黑素150 μmol/L的浓度效果为最佳,处理第9 d,与NaCl胁迫相比,草莓幼苗叶片的株高、茎粗、单株重、Chla、Chlb、Car、Pn、Ci、Fm、SOD、CAT、POD和APX分别增长了23.75%、37.97%、18.87%、37.95%、75.93%、41.22%、58.96%、26.47%、46.72%、32.89%、84.26%、48.34%和33.94%,F₀的上升速度显著降低。【结论】 在NaCl胁迫下,外源施加不同浓度的褪黑素均可有效缓解NaCl胁迫对草莓造成的伤害,其中150 μmol/L效果最佳。

关键词: 草莓; 褪黑素; NaCl胁迫; 光合特性

Abstract:

【Objective】 To study NaCl stress, different concentrations of exogenous melatonin on growth indicators, photosynthetic pigment content, photosynthetic characteristics, chlorophyll fluorescence characteristics and antioxidant activity of strawberry seedlings in the hope of providing the optimal concentration of stress of strawberry NaCl stress for melatonin theoretical basis.【Methods】 Strawberry seedlings were taken as testing materials, and the seedlings were measured under 5 g/L NaCl treatment by spraying different concentrations of exogenous melatonin (0, 50, 100, 150 and 200 μmol/L).During the experiments, growth indicators, photosynthetic content, photosynthetic properties, chlorophyll fluorescence and antioxidant activity were determined the 3, 6 and 9 d.【Results】 NaCl stress could reduce the growth index, photosynthetic properties, photosynthetic properties, chlorophyll fluorescence characteristics, and antioxidant activity of strawberry seedlings.Exogenous application of 50, 100, 150 and 200 μmol/L concentrations of melatonin increased them under NaCl stress.The concentration effect of melatonin 150 μmol/L was optimal, and after being processed 9 d, compared with NaCl stress,the plant height, stem diameter, fresh weight per plant, Chla, Chlb, Car, Pn, Ci, Fm, SOD, CAT, POD and APX of strawberry seedlings increased by 23.75%, 37.97%, 18.87%, 37.95%, 75.93%, 41.22%, 58.96%, 26.47%, 46.72%, 32.89%, 84.26%, 48.34%and 33.94%, F₀ rising speed was significantly reduced.【Conclusion】 Under NaCl stress, spraying different concentrations of melatonin can effectively alleviate NaCl stress injury to strawberries and the best effects is 150 μmol/L.

Key words: strawberry; melatonin; NaCl stress; photosynthetic characteristics

中图分类号:

S668.4

马媛媛, 李刚, 何旺, 赵宝龙, 鲁倩君, 陈丽靓, 刘迎. 外源褪黑素对NaCl胁迫下草莓幼苗生理特性的缓解效应[J]. 新疆农业科学, 2023, 60(10): 2486-2495.

MA Yuanyuan, LI Gang, HE Wang, ZHAO Baolong, LU Qianjun, CHEN Liliang, LIU Ying. Alleviating effect of exogenous melatonin on strawberry seedling under NaCl stress[J]. Xinjiang Agricultural Sciences, 2023, 60(10): 2486-2495.

图/表 8

表1 草莓幼苗的不同MT浓度组合

Tab.1 Different MT concentration combinations of strawberry seedlings

处理 Treatment	NaCl浓度 NaCl concentration (g/L)	褪黑素浓度 MT concentration (μmol/L)
CK(清水对照)	0	0
T₀	5	0
T₁	5	50
T₂	5	100
T₃	5	150
T₄	5	200

表2 NaCl胁迫及不同浓度外源褪黑素下草莓幼苗的株高、茎粗和鲜重变化

Tab.2 Effects of exogenous melatonin on plant height, stem diameter and fresh weight of strawberry seedlings under NaCl stress

指标 Index	处理 Treatment	3 d	6 d	9 d
株高 Plant height (cm)	CK	12.93±0.67^a	13.1±0.26^a	13.24±0.15^a
	T₀	12.28±0.06^a	11.18±0.14^d	8.73±0.36^c
	T₁	12.27±1.01^a	11.46±0.1 $0 c d$	8.53±0.32^c
	T₂	12.33±0.15^a	11.67±0.40^bcd	9.1±0.35^c
	T₃	12.50±0.06^a	12.13±0.15^b	10.8±0.50^b
	T₄	12.42±0.25^a	11.99±0.10^bc	10.23±0.06^b
茎粗 Stem diameter (cm)	CK	2.83±0.08^a	2.86±0.18^a	2.87±0.36^a
	T₀	2.68±0.07^b	2.35±0.32^b	1.72±0.10^c
	T₁	2.56±0.10^b	2.39±0.17^b	1.91±0.12^c
	T₂	2.63±0.03^b	2.47±0.29^ab	2.03±0.11^bc
	T₃	2.75±0.11^ab	2.57±0.03^ab	2.37±0.08^b
	T₄	2.77±0.12^ab	2.49±0.04^ab	2.11±0.11^bc
鲜重 Fresh weight (g)	CK	17.85±0.83^a	18.04±0.65^a	18.18±0.23^a
	T₀	16.87±0.30^a	15.7±0.16^c	13.41±1.10^c
	T₁	17.11±0.51^a	16.14±0.29^c	14.24±0.23^c
	T₂	17.31±0.40^a	16.41±0.26^bc	14.40±0.30^c
	T₃	17.63±0.09^a	17.29±0.29^ab	15.94±0.73^b
	T₄	17.53±0.27^a	17.12±0.48^ab	15.53±0.19^b

表2 NaCl胁迫及不同浓度外源褪黑素下草莓幼苗的株高、茎粗和鲜重变化

Tab.2 Effects of exogenous melatonin on plant height, stem diameter and fresh weight of strawberry seedlings under NaCl stress

指标 Index	处理 Treatment	3 d	6 d	9 d
株高 Plant height (cm)	CK	12.93±0.67^a	13.1±0.26^a	13.24±0.15^a
	T₀	12.28±0.06^a	11.18±0.14^d	8.73±0.36^c
	T₁	12.27±1.01^a	11.46±0.1 $0 c d$	8.53±0.32^c
	T₂	12.33±0.15^a	11.67±0.40^bcd	9.1±0.35^c
	T₃	12.50±0.06^a	12.13±0.15^b	10.8±0.50^b
	T₄	12.42±0.25^a	11.99±0.10^bc	10.23±0.06^b
茎粗 Stem diameter (cm)	CK	2.83±0.08^a	2.86±0.18^a	2.87±0.36^a
	T₀	2.68±0.07^b	2.35±0.32^b	1.72±0.10^c
	T₁	2.56±0.10^b	2.39±0.17^b	1.91±0.12^c
	T₂	2.63±0.03^b	2.47±0.29^ab	2.03±0.11^bc
	T₃	2.75±0.11^ab	2.57±0.03^ab	2.37±0.08^b
	T₄	2.77±0.12^ab	2.49±0.04^ab	2.11±0.11^bc
鲜重 Fresh weight (g)	CK	17.85±0.83^a	18.04±0.65^a	18.18±0.23^a
	T₀	16.87±0.30^a	15.7±0.16^c	13.41±1.10^c
	T₁	17.11±0.51^a	16.14±0.29^c	14.24±0.23^c
	T₂	17.31±0.40^a	16.41±0.26^bc	14.40±0.30^c
	T₃	17.63±0.09^a	17.29±0.29^ab	15.94±0.73^b
	T₄	17.53±0.27^a	17.12±0.48^ab	15.53±0.19^b

图1 NaCl胁迫及不同浓度外源褪黑素下草莓幼苗叶片光合色素含量变化

Fig.1 Effects of exogenous melatonin on photosynthetic pigment content in leaves of strawberry seedlings under NaCl stress

图2 NaCl胁迫及不同浓度外源褪黑素下草莓幼苗叶片净光合速率和胞间CO2浓度变化

Fig.2 Effects of exogenous melatonin on net photosynthetic rate and intercellular CO2 concentration of strawberry Seedlings under NaCl stress

图3 NaCl胁迫及不同外源亚精胺下草莓幼苗叶片最大荧光和初始荧光变化

Fig.3 Effect of exogenous melatonin on Fm and F0 of strawberry seedling leaves under NaCl stress

图4 NaCl胁迫及不同浓度外源褪黑素下POD、SOD、CAT和APX活性变化

Fig.4 Effects of exogenous melatonin on the activity of POD, SOD, CAT and APX under NaCl stress

表3 主成分分析成分荷载矩阵

Tab.3 Principal component analysis load matrix

指标或参数 Indicators or parameters	第1主成分 The first principal component	第2主成分 The second principal component
株高Plant height	0.980	-0.025
茎粗Stem diameter	0.992	0.080
单株重Weight per plant	0.996	-0.046
总叶绿素Total chlorophyll	0.958	0.285
Car	0.985	0.105
Pn	0.996	-0.075
Ci	0.992	-0.042
Fm	0.934	0.355
F0	-0.846	-0.452
POD	-0.443	0.817
SOD	-0.266	0.895
CAT	-0.121	0.982
APX	-0.285	0.928
特征值 Eigen values	8.750	3.733
方差贡献率 Proportion of variance(%)	67.304	28.712
累计贡献率 Cumulative variance(%)	67.304	96.016

表4 不同浓度褪黑素主成分值及排序

Tab.4 principal component analysis values and ranking of melatonin in different concentrations

处理 Trea- tment	Y₁	Y₂	综合主成分Y Comprehensive principal components	排名
CK	5.344	0.321	3.49	1
T₀	-3.107	-2.141	-2.61	6
T₁	-1.97	-0.443	-1.37	5
T₂	-1.019	0.505	-0.51	4
T₃	0.788	1.304	0.89	2
T₄	-0.035	0.454	0.11	3

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外源褪黑素对NaCl胁迫下草莓幼苗生理特性的缓解效应

Alleviating effect of exogenous melatonin on strawberry seedling under NaCl stress

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