|本期目录/Table of Contents|

[1]刁海欣,黄清俊,苗利媛,等.土壤含水量对白芨与菌根真菌共生关系的影响[J].江苏农业科学,2020,48(22):122-130.
 Diao Haixin,et al.Influence of soil water content on symbiotic relationship between Bletilla striata and mycorrhizal fungi[J].Jiangsu Agricultural Sciences,2020,48(22):122-130.
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土壤含水量对白芨与菌根真菌共生关系的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第48卷
期数:
2020年第22期
页码:
122-130
栏目:
园艺与林学
出版日期:
2020-11-20

文章信息/Info

Title:
Influence of soil water content on symbiotic relationship between Bletilla striata and mycorrhizal fungi
作者:
刁海欣12 黄清俊2 苗利媛1 曾歆花1 黄卫昌1
1.上海辰山植物园中国科学院上海辰山植物科学研究中心,上海 201602; 2.上海应用技术大学生态技术与工程学院,上海 201418
Author(s):
Diao Haixinet al
关键词:
白芨菌根真菌多样性高通量测序显微结构碳氮稳定同位素土壤含水率
Keywords:
-
分类号:
S682.310.1
DOI:
-
文献标志码:
A
摘要:
采用石蜡切片技术、DNA分子鉴定技术和稳定同位素技术相结合的手段,研究不同土壤碳氮含量对白芨菌根真菌多样性、菌根结构特征及碳氮稳定同位素特征和光合特性的影响。结果表明,不同土壤含水量条件下,白芨菌根真菌共鉴定出305个OTU,8门99属。菌根真菌总物种数和α多样性指数随着土壤含水量的减少而增加(土壤含水量为15%的真菌总数比土壤含水量为45%时多了18个OTU);同时随着土壤含水量的降低,优势菌根真菌逐渐转变为伞菌纲Agaricomycetes、Serendipita和肉座菌目Hypocreales真菌;基于门水平,子囊菌门Ascomycota真菌丰度随着土壤含水量减少而明显减少,而担子菌门Basidiomycota真菌丰度波动不大;菌根真菌侵入方式不受土壤含水量影响,均是通过通道细胞进入皮层组织,但菌丝团数量和侵染率随着土壤含水量的减少而降低;此外,白芨叶片的碳氮同位素丰度随着土壤含水量的减少而逐渐增加,净光合速率却随之明显下降,土壤含水量为45%时是白芨与菌根共生的最佳水平。研究结果明确了白芨与菌根真菌共生关系对土壤含水量变化的响应以及对土壤含水量的耐受范围,为白芨属植物野生种群恢复提供参考。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2020-05-02
基金项目:国家自然科学基金(编号:31902108);上海市绿化和市容管理局科学技术项目(编号:G192420);上海市现代农业产业技术体系项目(编号:201908);上海应用技术大学协同创新基金(编号:XTCX2018-3)。
作者简介:刁海欣(1994—),女,河南商丘人,硕士研究生,主要从事兰科植物菌根生态学研究。E-mail:dhxtx1216@163.com。
通信作者:曾歆花,博士,助理研究员,主要从事兰科植物与菌根真菌共生关系研究,E-mail:zengxinhualuxi@163.com;黄卫昌,博士,教授级高级工程师,主要从事兰科植物保育研究,E-mail:hwc_zx@126.com。
更新日期/Last Update: 2020-11-20