2个绣线菊品种对镉的积累特性与耐性机制

doi:10.3969/j.issn.1004-1524.20240960

浙江农业学报 ›› 2025, Vol. 37 ›› Issue (11): 2283-2292.DOI: 10.3969/j.issn.1004-1524.20240960

2个绣线菊品种对镉的积累特性与耐性机制

谭欣蕊(), 唐敏, 刘燕, 王美仙()

北京林业大学国家花卉工程技术研究中心,城乡生态环境北京实验室,北京 100083

收稿日期:2024-11-09 出版日期:2025-11-25 发布日期:2025-12-08
作者简介:谭欣蕊(1999—),女,重庆丰都人,硕士研究生,研究方向为园林植物应用与园林生态。E-mail: 644729687@qq.com
通讯作者: ^*王美仙,E-mail: wangmx@bjfu.edu.cn
基金资助:
国家自然科学基金(31600574);北京市共建项目专项;北京林业大学建设世界一流学科和特色发展引导专项资金(2019XKJS0322);北京市教委科学研究与研究生培养共建科研项目(2019GJ-03)

Cadmium accumulation characteristics and tolerance mechanism of 2 meadowsweet varieties

TAN Xinrui(), TANG Min, LIU Yan, WANG Meixian()

Beijing Laboratory of Urban and Rural Ecological Environment, National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China

Received:2024-11-09 Online:2025-11-25 Published:2025-12-08

摘要/Abstract

摘要： 为了探明小公主绣线菊(Spiraea japonica Little Princess,简记为SL)和鲜红绣线菊(Spiraea×bumalda Coccimea,简记为SC)对Cd的积累特性和耐性机制,采用盆栽污染模拟试验,研究了不同Cd含量(25、50、100、200 mg·kg^-1,依次记为T₁~T₄处理)胁迫下2个绣线菊品种的生长、生理指标,及Cd的积累、分布和转运特点。结果表明:与不加镉的CK相比,T₂~T₄处理显著(p<0.05)降低SC的整株生物量,降幅为22.4%~53.0%,且各加Cd处理均显著降低2种绣线菊叶片的叶绿素含量。T₄处理下,SL和SC叶片的相对电导率分别是CK的1.17倍和1.38倍,MDA含量分别是CK的1.42、1.92倍。两个品种相比,SC的镉耐受系数和富集能力均低于SL。Cd在这2种绣线菊上的分布比例均表现为根>茎>叶,在亚细胞水平上均主要积累在细胞壁(T1~T4处理下,在SC和SL上的占比分别为59.12%~71.10%和57.05%~62.47%),主要以NaCl提取态存在(T1~T4处理下,在SC和SL上的占比分别为46.61%~57.86%和60.51%~67.65%)。

关键词: 镉, 积累特性, 亚细胞分布, 化学形态, 绣线菊

Abstract:

To investigate the cadmium (Cd) accumulation characteristics and tolerance mechanisms of Spiraea japonica Little Princess (abbreviated as SL) and Spiraea×bumalda Coccimea (abbreviated as SC), a pot experiment with simulated Cd contamination was conducted. The growth, physiological indexes, as well as the accumulation, distribution, and translocation characteristics of Cd in the two meadowsweet varieties were studied under stress conditions with different Cd contents (25, 50, 100, 200 mg·kg^-1, denoted as T₁ to T₄ treatments in sequence). The results showed that, compared with the control group (CK) without Cd addition, the T₂-T₄ treatments significantly (p<0.05) reduced the total plant biomass of SC by 22.4%-53.0%. Moreover, all Cd-added treatments significantly decreased the chlorophyll content in the leaves of the two meadowsweet varieties. Under the T₄ treatment, the relative electrical conductivity in the leaves of SL and SC was 1.17 times and 1.38 times of CK, respectively, while the malondialdehyde (MDA) content was 1.42 times and 1.92 times of CK, respectively. Between the two varieties, both the Cd tolerance index and bioconcentration factor of SC were lower than those of SL. The distribution ratio of Cd in the two meadowsweet varieties followed the order of root > stem > leaf. At the subcellular level, Cd was mainly accumulated in the cell wall, accounting for 59.12%-71.10% and 57.05%-62.47% of the total Cd under T₁-T₄ treatments in SC and SL, respectively. In terms of chemical forms, Cd mainly existed in the NaCl-extractable form, with proportions of 46.61%-57.86% and 60.51%-67.65% under T₁-T₄ treatments in SC and SL, respectively.

Key words: cadmium, accumulation characteristic, subcellular distribution, chemical forms, meadowsweet

中图分类号:

S682.11

谭欣蕊, 唐敏, 刘燕, 王美仙. 2个绣线菊品种对镉的积累特性与耐性机制[J]. 浙江农业学报, 2025, 37(11): 2283-2292.

TAN Xinrui, TANG Min, LIU Yan, WANG Meixian. Cadmium accumulation characteristics and tolerance mechanism of 2 meadowsweet varieties[J]. Acta Agriculturae Zhejiangensis, 2025, 37(11): 2283-2292.

图/表 10

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品种 Variety	处理 Treatment	株高 Plant height/cm	根长 Root length/cm
小公主	CK	32.87±3.31 a	27.56±3.04 a
Little Princess	T₁	31.03±2.65 a	25.80±1.86 a
	T₂	24.07±1.16 b	24.49±2.61 a
	T₃	25.53±2.55 b	22.40±3.09 a
	T₄	25.83±2.46 b	22.18±2.76 a
鲜红	CK	49.50±0.79 ab	31.90±4.16 a
Coccimea	T₁	48.70±2.26 ab	25.53±2.78 ab
	T₂	49.00±3.11 ab	25.38±3.67 ab
	T₃	50.53±2.08 a	20.66±2.93 b
	T₄	44.67±4.48 b	14.19±3.57 c

品种 Variety	处理 Treatment	株高 Plant height/cm	根长 Root length/cm
小公主	CK	32.87±3.31 a	27.56±3.04 a
Little Princess	T₁	31.03±2.65 a	25.80±1.86 a
	T₂	24.07±1.16 b	24.49±2.61 a
	T₃	25.53±2.55 b	22.40±3.09 a
	T₄	25.83±2.46 b	22.18±2.76 a
鲜红	CK	49.50±0.79 ab	31.90±4.16 a
Coccimea	T₁	48.70±2.26 ab	25.53±2.78 ab
	T₂	49.00±3.11 ab	25.38±3.67 ab
	T₃	50.53±2.08 a	20.66±2.93 b
	T₄	44.67±4.48 b	14.19±3.57 c

品种 Variety	处理 Treatment	不同部位的单株生物量Biomass of different parts per plant			整株生物量 Biomass of whole plant
品种 Variety	处理 Treatment	叶Leaf	茎Stem	根Root	整株生物量 Biomass of whole plant
小公主	CK	205.30±33.61 a	141.35±24.49 a	95.92±6.26 a	442.57±62.14 a
Little Princess	T₁	202.95±9.33 a	139.60±2.61 a	92.05±0.73 ab	434.60±7.73 a
	T₂	179.68±10.66 a	124.09±6.19 a	78.94±7.43 b	382.71±22.51 a
	T₃	180.66±15.81 a	126.56±11.58 a	78.64±9.08 b	385.85±35.77 a
	T₄	168.76±17.14 a	121.41±11.96 a	76.15±5.76 b	366.32±33.61 a
鲜红	CK	290.69±57.88 a	244.54±39.60 a	146.11±7.05 a	681.34±104.15 a
Coccimea	T₁	248.52±40.36 ab	234.13±14.83 ab	127.56±13.29 ab	610.21±48.82 ab
	T₂	223.37±2.15 ab	190.26±11.05 bc	114.70±8.20 bc	528.33±15.78 b
	T₃	208.29±20.36 b	181.08±16.52 cd	95.54±16.32 c	484.91±22.42 b
	T₄	125.89±50.45 c	129.99±44.37 d	63.99±12.15 d	319.87±105.86 c

品种 Variety	处理 Treatment	不同部位的单株生物量Biomass of different parts per plant			整株生物量 Biomass of whole plant
品种 Variety	处理 Treatment	叶Leaf	茎Stem	根Root	整株生物量 Biomass of whole plant
小公主	CK	205.30±33.61 a	141.35±24.49 a	95.92±6.26 a	442.57±62.14 a
Little Princess	T₁	202.95±9.33 a	139.60±2.61 a	92.05±0.73 ab	434.60±7.73 a
	T₂	179.68±10.66 a	124.09±6.19 a	78.94±7.43 b	382.71±22.51 a
	T₃	180.66±15.81 a	126.56±11.58 a	78.64±9.08 b	385.85±35.77 a
	T₄	168.76±17.14 a	121.41±11.96 a	76.15±5.76 b	366.32±33.61 a
鲜红	CK	290.69±57.88 a	244.54±39.60 a	146.11±7.05 a	681.34±104.15 a
Coccimea	T₁	248.52±40.36 ab	234.13±14.83 ab	127.56±13.29 ab	610.21±48.82 ab
	T₂	223.37±2.15 ab	190.26±11.05 bc	114.70±8.20 bc	528.33±15.78 b
	T₃	208.29±20.36 b	181.08±16.52 cd	95.54±16.32 c	484.91±22.42 b
	T₄	125.89±50.45 c	129.99±44.37 d	63.99±12.15 d	319.87±105.86 c

品种 Variety	处理 Treatment	不同部位的镉含量Cd conten in different parts of plant
品种 Variety	处理 Treatment	叶Leaf	茎Stem	根Root
小公主Little Princess	CK	0.04±0.01 d	0.13±0.01 e	0.51±0.13 e
	T₁	6.85±0.44 c	14.99±1.40 d	63.97±3.04 d
	T₂	15.66±1.68 b	27.89±5.71 c	78.61±4.03 c
	T₃	17.66±0.64 b	40.62±6.33 b	89.28±4.48 b
	T₄	26.55±2.54 a	55.51±7.16 a	99.23±6.03 a
鲜红Coccimea	CK	0.10±0.02 d	0.60±0.04 d	0.76±0.16 d
	T₁	6.71±0.51 c	16.24±3.45 c	16.94±1.04 c
	T₂	8.53±0.26 c	16.20±3.15 c	17.89±1.47 c
	T₃	11.64±1.03 b	23.81±0.96 b	41.44±7.04 b
	T₄	20.26±3.46 a	41.60±6.13 a	59.36±8.14 a

2个绣线菊品种对镉的积累特性与耐性机制

Cadmium accumulation characteristics and tolerance mechanism of 2 meadowsweet varieties

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品种 Variety	处理 Treatment	不同部位的生物富集系数Bioconcentration factor of different parts of plant			转移系数 Translocation factor	耐受系数 Tolerance index
品种 Variety	处理 Treatment	叶Leaf	茎Stem	根Root	转移系数 Translocation factor	耐受系数 Tolerance index
小公主	CK	0.16±0.02 a	0.56±0.05 a	2.22±0.56 a	0.72±0.05 a	—
Little Princess	T₁	0.14±0.01 ab	0.30±0.03 b	1.28±0.06 b	0.44±0.02 b	0.98±0.02 a
	T₂	0.16±0.02 a	0.28±0.06 b	0.79±0.04 bc	0.36±0.19 b	0.86±0.05 ab
	T₃	0.12±0.00 b	0.27±0.04 b	0.60±0.03 c	0.39±0.04 b	0.87±0.08 ab
	T₄	0.13±0.01 ab	0.28±0.04 b	0.50±0.03 c	0.41±0.05 b	0.83±0.08 b
鲜红	CK	0.49±0.07 a	2.60±0.19 a	3.30±0.69 a	3.08±0.27 a	—
Coccimea	T₁	0.13±0.01 b	0.32±0.07 b	0.34±0.02 b	0.46±0.07 b	0.90±0.07 a
	T₂	0.08±0.01 b	0.17±0.03 bc	0.18±0.01 b	0.25±0.03 b	0.78±0.02 ab
	T₃	0.08±0.01 b	0.16±0.01 c	0.28±0.05 b	0.24±0.01 b	0.71±0.03 b
	T₄	0.11±0.02 b	0.21±0.03 bc	0.30±0.04 b	0.31±0.05 b	0.47±0.16 c

品种 Variety	处理 Treatment	不同部位的生物富集系数Bioconcentration factor of different parts of plant			转移系数 Translocation factor	耐受系数 Tolerance index
品种 Variety	处理 Treatment	叶Leaf	茎Stem	根Root	转移系数 Translocation factor	耐受系数 Tolerance index
小公主	CK	0.16±0.02 a	0.56±0.05 a	2.22±0.56 a	0.72±0.05 a	—
Little Princess	T₁	0.14±0.01 ab	0.30±0.03 b	1.28±0.06 b	0.44±0.02 b	0.98±0.02 a
	T₂	0.16±0.02 a	0.28±0.06 b	0.79±0.04 bc	0.36±0.19 b	0.86±0.05 ab
	T₃	0.12±0.00 b	0.27±0.04 b	0.60±0.03 c	0.39±0.04 b	0.87±0.08 ab
	T₄	0.13±0.01 ab	0.28±0.04 b	0.50±0.03 c	0.41±0.05 b	0.83±0.08 b
鲜红	CK	0.49±0.07 a	2.60±0.19 a	3.30±0.69 a	3.08±0.27 a	—
Coccimea	T₁	0.13±0.01 b	0.32±0.07 b	0.34±0.02 b	0.46±0.07 b	0.90±0.07 a
	T₂	0.08±0.01 b	0.17±0.03 bc	0.18±0.01 b	0.25±0.03 b	0.78±0.02 ab
	T₃	0.08±0.01 b	0.16±0.01 c	0.28±0.05 b	0.24±0.01 b	0.71±0.03 b
	T₄	0.11±0.02 b	0.21±0.03 bc	0.30±0.04 b	0.31±0.05 b	0.47±0.16 c