Effects of field inoculation with arbuscular mycorrhizal fungi and endophytic fungi on fruit quality and soil properties of Newhall navel orange
Effects of field inoculation with arbuscular mycorrhizal fungi and endophytic fungi on fruit quality and soil properties of Newhall navel orange
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DOI：
10.1016/j.apsoil.2021.104308
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发表时间：
2021-11-08
影响因子：
4.8
通讯作者：
Kuca, Kamil
中科院分区：
文献类型：
--
作者：
Cheng, Xiao-Fen;Xie, Miao-Miao;Kuca, Kamil
有益真菌--包括难以培养的丛枝菌根真菌（AMF）和可培养的内生真菌梨形孢（Piriformospora indica）--在受控条件下在宿主中发挥积极作用，而关于这些真菌在田间柑橘（一种菌根依赖性植物）中的应用的信息很少.本研究旨在分析两种丛枝菌根真菌（Diversispora spurca和D. versiformis）和内生真菌（P. indica）对纽荷尔脐橙（Citrus sinensis Osbeck cv.纽荷尔）嫁接在三叶橙在外地。结果表明，接种真菌后根系真菌定殖率提高。接种真菌提高了土壤的酸性、中性、碱性和总磷酸酶活性，增加了土壤Bray-P含量，增加了水稳性团聚体的分布，主要分布在2-4 mm的团聚体中;并以真菌种类依赖的方式刺激易提取、难提取和总球囊霉素相关土壤蛋白的产生，这与土壤团聚体稳定性呈正相关。真菌接种，在一定程度上，改善外部果实品质，这取决于真菌的种类。3种真菌中，只有D. Versiformis显著提高了果实可溶性固形物含量，但三者共同作用促进了果实葡萄糖、果糖和蔗糖的含量。两种丛枝菌根真菌显著提高了果实磷含量，而印度杨则显著降低了果实磷含量。versiformis显著提高了果实中钾、镁、锰的含量;与未接种的对照相比，spurca提高了果实铜（Cu）、锌（Zn）、钾（K）和镁（Mg）的含量，而P. indica提高了果实铁（Fe）和锌（Zn）的含量。研究结果表明，AMF和P. indica在柑橘田间接种后，部分改善了果实品质和土壤性状，为P. indica在柑橘田间部分替代AMF提供了一条途径。
Beneficial fungi - including difficult - to - culture arbuscular mycorrhizal fungi (AMF) and the culturable endophytic fungus Piriformospora indica - play positive roles in hosts under controlled conditions, whereas information regarding the application of these fungi in field citrus (a mycorrhizal - dependent plant) is scarce. The present study aims to analyze the effects of two AMF species (Diversispora spurca and D. versiformis) and an endophytic fungus (P. indica) on the fruit quality and soil properties of Newhall navel oranges (Citrus sinensis Osbeck cv. Newhall) grafted on trifoliate oranges in the field. The results showed the improvement of root fungal colonization following fungal inoculation. The fungal inoculations increased the soil's acid, neutral, alkaline, and total phosphatase activity, as well as soil Bray-P content; increased the distribution of water-stable aggregates, mainly in the size range of 2-4 mm; and stimulated the production of easily extractable, difficultly extractable, and total glomalin-related soil proteins in a fungal-species-dependent manner, which was positively correlated with soil aggregate stability. Fungal inoculations, to some extent, improved external fruit quality, depending on the fungal species. Among the three fungi, only D. versiformis significantly increased the fruits' soluble solid content, but all three together promoted fruit glucose, fructose, and sucrose content. The two AMF species dramatically increased fruit phosphorus (P) content, while P. indica distinctly reduced it. D. versiformis also significantly elevated fruit potassium (K), magnesium (Mg), and manganese (Mn) content, D. spurca improved fruit copper (Cu), zinc (Zn), K, and Mg content, and P. indica increased fruit iron (Fe) and Zn content, compared with non-inoculated controls. Our results indicate that the field inoculation of citrus with AMF and P. indica partially improved fruit quality and soil properties, providing a pathway for P. indica to partially replace AMF in field citrus applications.