浙江农业学报 ›› 2023, Vol. 35 ›› Issue (10): 2321-2331.DOI: 10.3969/j.issn.1004-1524.20221550
范丽莹1,2(), 范婷婷2, 仝宗军3, 梁立韵2, 赵志勇2, 陈辉3, 周昌艳2, 赵晓燕2,*(
)
收稿日期:
2022-11-03
出版日期:
2023-10-25
发布日期:
2023-10-31
作者简介:
范丽莹(1998—),女,黑龙江牡丹江人,硕士研究生,主要从事食品安全与检测研究。E-mail:affflllyyy111@163.com
通讯作者:
*赵晓燕,E-mail:cindy8119@163.com
基金资助:
FAN Liying1,2(), FAN Tingting2, TONG Zongjun3, LIANG Liyun2, ZHAO Zhiyong2, CHEN Hui3, ZHOU Changyan2, ZHAO Xiaoyan2,*(
)
Received:
2022-11-03
Online:
2023-10-25
Published:
2023-10-31
摘要:
羊肚菌(Morchella spp.)作为一种覆土栽培的食用菌,面临土壤环境镉(Cd)暴露和积累的风险。本研究选取常用栽培品种六妹羊肚菌(Morchella sextelata)M25和梯棱羊肚菌(Morchella importuna)I15作为试验材料,对比分析Cd胁迫对菌丝生理和Cd富集规律的影响,具体探究菌丝生长速度、生物量、微观结构、抗氧化酶、抗氧化活性物质和Cd含量的变化差异。结果显示,I15比M25富集Cd的能力强,不同品种羊肚菌过氧化氢酶(CAT)、谷胱甘肽还原酶(GR)、抗坏血酸过氧化物酶(APX)活性和丙二醛(MDA)、抗坏血酸(AsA)含量均随Cd质量浓度的增加呈先增后减趋势,但I15比M25的GR、谷胱甘肽过氧化物酶(GSH-Px)活性和谷胱甘肽(GSH)含量更高。综合两个羊肚菌品种的生理和Cd富集能力等指标发现,相比六妹羊肚菌M25而言,Cd富集能力更强、生长更旺盛、更不易受镉损害的梯棱羊肚菌I15在谷胱甘肽转化体系中起到的解毒效果更强。研究结果不仅为羊肚菌Cd抗性菌株筛选和含Cd土壤栽培模式的创新奠定了基础,也为真菌生物修复提供了新的见解。
中图分类号:
范丽莹, 范婷婷, 仝宗军, 梁立韵, 赵志勇, 陈辉, 周昌艳, 赵晓燕. 镉胁迫对不同品种羊肚菌镉富集规律与抗氧化系统的影响[J]. 浙江农业学报, 2023, 35(10): 2321-2331.
FAN Liying, FAN Tingting, TONG Zongjun, LIANG Liyun, ZHAO Zhiyong, CHEN Hui, ZHOU Changyan, ZHAO Xiaoyan. Effects on accumulation of cadmium and antioxidant system of different Morchella spp. under cadmium stress[J]. Acta Agriculturae Zhejiangensis, 2023, 35(10): 2321-2331.
图1 Cd胁迫对不同品种羊肚菌菌丝生长速度(a)、生物量(b)、菌落形态(c)、微观形态(d)的影响 I15,梯棱羊杜菌I15; M25,六妹羊肚菌M25。*、**、***分别表示在P<0.05、P<0.01和P<0.001水平差异显著,ns表示差异不显著。下同。
Fig.1 Effects of Cd stress on the growth rate, biomass, growth morphology, and microscopic morphology of the different Morchella spp. Mycelia I15, M.importuna; M25, M.sextelata M25. *, ** and *** mena significant differences at the levels of 0.05, 0.01 and 0.001 respectiviely, ns means not significant. The same as below.
图2 Cd胁迫处理对不同品种羊肚菌菌丝Cd富集能力的影响 柱上无相同小写字母表示差异显著。
Fig.2 Effects of Cd stress on the Cd bioconcentration factor of the different Morchella spp. mycelia Data on the bars marked without the same lowercase letter indicated significant differences at P<0.05.
菌株 Strain | 回归方程 regression equation | 决定系数 R2 |
---|---|---|
I 15 | y=1.797/(1+e2.891-6.187x) | 0.954 7 |
M25 | y=3.271/(1+e3.232-2.582x) | 0.983 3 |
表1 培养基中Cd含量与不同品种羊肚菌菌丝体Cd含量关系的数学模型
Table 1 Mathematical model of relationship between Cd contents in culture medium and the different Morchella spp. mycelia
菌株 Strain | 回归方程 regression equation | 决定系数 R2 |
---|---|---|
I 15 | y=1.797/(1+e2.891-6.187x) | 0.954 7 |
M25 | y=3.271/(1+e3.232-2.582x) | 0.983 3 |
图4 Cd胁迫处理对不同品种羊肚菌菌丝SOD、CAT、APX、GR、GSH-Px的影响
Fig.4 Effects of Cd stress on activities of SOD, CAT, APX, GR and GSH-Px in the mycelia of different Morchella spp.
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[15] | 姚侠妹1,2,偶春1,*,张瑞娥1, 姚晓洁3, 耿静1,王振1. 外源水杨酸对盐胁迫栀子幼苗的缓解效应[J]. 浙江农业学报, 2015, 27(11): 1939-. |
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摘要 174
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