Potential of a halophyte-associated endophytic fungus for sustaining Chinese white poplar growth under salinity
Potential of a halophyte-associated endophytic fungus for sustaining Chinese white poplar growth under salinity
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盐生相关内生真菌在盐度下维持中国白杨生长的潜力
DOI：
10.1007/s13199-018-0541-8
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发表时间：
2018-02
期刊：
影响因子：
2.5
通讯作者：
Yuan Zhilin
中科院分区：
文献类型：
--
作者：
Pan Xueyu;Qin Yuan;Yuan Zhilin
内生菌介导的植物生长和胁迫耐受性已得到越来越多的认可。然而，目前我们对盐分环境内生菌功能的了解确实很少。在这项工作中，我们发现了一种内生子囊菌Curvulariasp。从盐生植物碱蓬中分离出来，能够与杨树（毛白杨）建立有益的共生关系。显微染色技术证实了Curvulariasp。接种两周后可穿透杨树根部，并在细胞间和细胞内的根毛和/或皮层细胞中容易形成菌核样结构和念珠菌丝细胞。这意味着这种真菌可以被称为深色有隔内生菌。盆栽实验表明弯孢菌属 (Curvulariasp.)。在盐胁迫条件下，显着促进杨树生长并导致抗氧化酶的产生增加，特别是超氧化物歧化酶（SOD）和抗坏血酸过氧化物酶（APX）。弯孢菌属的存在。还提高了叶子中叶绿素 a、b 和脯氨酸的含量，尽管并非所有差异都很显着。与未接种植物相比，定植植物的基于光系统II的电子传输速率（ETR）、光适应稳态下的实际量子产率（ψPSII）和光化学猝灭值（qP）显着更高，尽管暗适应态（Fv/Fm）和光适应态（F’v/F’m）的最大量子产率值仅略有差异。总的来说，我们的数据支持了弯孢菌能力的证据。减轻盐度胁迫对杨树生长的不利影响，并强调极端条件下的内生菌作为新型益生菌在提高树苗耐盐性方面的潜在用途。
Endophyte-mediated plant growth and stress tolerance have been increasingly acknowledged. Our knowledge of functions of endophytes from saline environments, however, is currently scant indeed. In this work, we found that an endophytic ascomycetousCurvulariasp. isolated from a halophytic plantSuaeda salsawas able to establish beneficial symbiosis with poplar (Populus tomentosa). Microscopic staining technique confirmed that theCurvulariasp. can penetrate the poplar roots after two week inoculation and readily form sclerotia-like structures and monilioid hyphal cells in root hair and/or cortex cells, both intercellularly and intracellularly. This implied that this fungus can be referred to as a dark septate endophyte. Pot experiments revealed thatCurvulariasp. significantly promoted the poplar growth and resulted in increased production of the antioxidant enzymes, particularly the superoxide dismutase (SOD) and ascorbate peroxidase (APX) under salinity stress condition. The presence ofCurvulariasp. also enhanced chlorophyll a, b and proline contents in leaves, although not all differences were significant. Compared to the non-inoculated plants, the photosystem II-based electron transport rate (ETR), actual quantum yield in the light-adapted steady state (ϕPSII) and photochemical quenching values (qP) was significantly higher in colonized plants, despite there were only slight differences in the values of the maximum quantum yield in the dark-adapted state (Fv/Fm) and in the light-adapted sate (F’v/F’m). Collectively, our data supports the evidence of the ability ofCurvulariasp. to alleviate the adverse effects of salinity stress on poplar growth and highlights the potential use of endophytes from extreme conditions as novel probiotics in improving salt tolerance of tree seedlings.
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影响因子：
5.7
作者：
Zhi-Bin Luo;Ke Li;Y. Gai;Cornelia Göbel;H. Wildhagen;Xiangning Jiang;I. Feussner;H. Rennenberg
通讯作者：
Zhi-Bin Luo;Ke Li;Y. Gai;Cornelia Göbel;H. Wildhagen;Xiangning Jiang;I. Feussner;H. Rennenberg
影响因子：
9.4
作者：
Baltruschat, Helmut;Fodor, Jozsef;Skoczowski, Andrzej
通讯作者：
Skoczowski, Andrzej
DOI：
--
发表时间：
1994
期刊：
--
影响因子：
--
作者：
A. Wellburn
通讯作者：
A. Wellburn
影响因子：
6.8
作者：
S. Shahabivand;Azar Parvaneh;A. Aliloo
通讯作者：
S. Shahabivand;Azar Parvaneh;A. Aliloo
盐胁迫下丛枝菌根对玉米植株光合作用和水分状况的影响
影响因子：
3.9
作者：
Sheng, Min;Tang, Ming;Huang, Yanhui
通讯作者：
Huang, Yanhui