Ericoid mycorrhizal fungus enhances microcutting rooting of Rhododendron fortunei and subsequent growth
作者机构：Institute of OceanographyMinjiang University350108 FuzhouFujian ProvinceChina Department of Environmental Horticulture and Mid-Florida Research and Education CenterUniversity of FloridaIFASApopkaFL 32703USA Shanghai Engineering Research Center of Sustainable Plant InnovationShanghai Botanical Garden200231 ShanghaiChina State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry University350002 FuzhouFujian ProvinceChina
出 版 物：《Horticulture Research》 (园艺研究（英文）)
年 卷 期：2020年第7卷第1期
页 面：931-941页
核心收录：
学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 090706[农学-园林植物与观赏园艺] 0907[农学-林学] 1001[医学-基础医学(可授医学、理学学位)] 09[农学] 0901[农学-作物学] 0703[理学-化学] 0836[工学-生物工程] 0902[农学-园艺学] 0834[工学-风景园林学（可授工学、农学学位）]
基 金：supported by National Nature Science Foundation of China(Grant No.31801897)to X.W Scientific Research Foundation of Graduate School at the Fujian Agriculture and Forestry University(324-1122YB026)to X.W Science and Technology Commission of Shanghai Municipality(Grant No.18DZ2283500)to C.Z
主 题：metabolism culture attributed
摘 要：Adventitious root(AR)formation is a unique feature of plant reproduction and plays a vital role in crop production as many horticultural and forestry plants are propagated through cuttings.A growing number of reports have shown that microbes,particularly mycorrhizal fungi are able to promote AR formation,but the underlying mechanisms remain largely *** study established an in vitro culture system and investigated AR formation in microcuttings of Rhododendron fortunei *** with Oidiodendron maius Barron Om19,an ericoid mycorrhizal fungus *** and precursors involved in the biosynthesis of indole-3-acetic acid(IAA)in Om19 mycelium were ***19 was able to produce a large quantity of tryptophan(Trp)and also indole-3-pyruvate(IPA)and IAA,indicating that IAA biosynthesis in Om19 could be through a Trp-dependent *** inoculation of Om19,ARs were quickly formed in *** related genes were activated in ARs,and Om19 effectively colonized the ***3,a key gene in plant biosynthesis of IAA and genes involved in nitrogen(N)uptake and metabolism,phosphorus(P)uptake were highly *** absorbed significantly greater quantity of mineral nutrients,and their growth was substantially enhanced compared to the control plants without Om19 inoculation.A working model for Om19 enhanced AR formation was *** rapid formation of ARs in cuttings could be due in part to the induction of IAA biosynthesized by Om19 and also attributed to Trp catalyzed biosynthesis of IAA in *** formation,in turn,provided Om19 preferred sites for *** study suggested that in addition to promoting AR formation,Om19 could potentially be used as a new biofertilizer for enhancing production of ericaceous plants,such as blueberry,cranberry,and rhododendron.
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