{"title":"疣状黄腐菌、大黄枝和细杆菌在牛痘下胚轴扦插纤维根和先根上的离体接种效果及定殖模式","authors":"T. Baba, D. Hirose, T. Ban","doi":"10.3117/PLANTROOT.15.1","DOIUrl":null,"url":null,"abstract":"The fine root systems of ericaceous plants possess both absorptive fibrous roots and skeletal pioneer roots. This functional differentiation (heterorhizy) can be coupled with a specific mycorrhization pattern, in which fibrous roots form more ericoid mycorrhizas than pioneer roots. However, the behaviors of root-associated fungi on the different individual roots remain largely unknown. We investigated the colonization patterns and root modifications of Leohumicola verrucosa, Oidiodendron maius, and Leptobacillium leptobactrum strains on Vaccinium oldhamii hypocotyl cuttings in vitro. Three putative and true mycorrhizal fungal strains (one L. verrucosa and two O. maius) exhibited typical heterorhizic colonization patterns and tended to increase pioneer root branching. However, a root endophytic fungus (L. leptobactrum) uniformly exhibited a lower colonization across the different roots and did not increase the number of pioneer root branches. The colonization patterns and root modification ability of mycorrhizal fungi may be linked, thereby ensuring sufficient colonization sites.","PeriodicalId":20205,"journal":{"name":"Plant Root","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"In vitro inoculation effects and colonization pattern of Leohumicola verrucosa, Oidiodendron maius, and Leptobacillium leptobactrum on fibrous and pioneer roots of Vaccinium oldhamii hypocotyl cuttings\",\"authors\":\"T. Baba, D. Hirose, T. Ban\",\"doi\":\"10.3117/PLANTROOT.15.1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The fine root systems of ericaceous plants possess both absorptive fibrous roots and skeletal pioneer roots. This functional differentiation (heterorhizy) can be coupled with a specific mycorrhization pattern, in which fibrous roots form more ericoid mycorrhizas than pioneer roots. However, the behaviors of root-associated fungi on the different individual roots remain largely unknown. We investigated the colonization patterns and root modifications of Leohumicola verrucosa, Oidiodendron maius, and Leptobacillium leptobactrum strains on Vaccinium oldhamii hypocotyl cuttings in vitro. Three putative and true mycorrhizal fungal strains (one L. verrucosa and two O. maius) exhibited typical heterorhizic colonization patterns and tended to increase pioneer root branching. However, a root endophytic fungus (L. leptobactrum) uniformly exhibited a lower colonization across the different roots and did not increase the number of pioneer root branches. The colonization patterns and root modification ability of mycorrhizal fungi may be linked, thereby ensuring sufficient colonization sites.\",\"PeriodicalId\":20205,\"journal\":{\"name\":\"Plant Root\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2021-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plant Root\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3117/PLANTROOT.15.1\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Root","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3117/PLANTROOT.15.1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
In vitro inoculation effects and colonization pattern of Leohumicola verrucosa, Oidiodendron maius, and Leptobacillium leptobactrum on fibrous and pioneer roots of Vaccinium oldhamii hypocotyl cuttings
The fine root systems of ericaceous plants possess both absorptive fibrous roots and skeletal pioneer roots. This functional differentiation (heterorhizy) can be coupled with a specific mycorrhization pattern, in which fibrous roots form more ericoid mycorrhizas than pioneer roots. However, the behaviors of root-associated fungi on the different individual roots remain largely unknown. We investigated the colonization patterns and root modifications of Leohumicola verrucosa, Oidiodendron maius, and Leptobacillium leptobactrum strains on Vaccinium oldhamii hypocotyl cuttings in vitro. Three putative and true mycorrhizal fungal strains (one L. verrucosa and two O. maius) exhibited typical heterorhizic colonization patterns and tended to increase pioneer root branching. However, a root endophytic fungus (L. leptobactrum) uniformly exhibited a lower colonization across the different roots and did not increase the number of pioneer root branches. The colonization patterns and root modification ability of mycorrhizal fungi may be linked, thereby ensuring sufficient colonization sites.
期刊介绍:
Plant Root publishes original papers, either theoretical or experimental, that provide novel insights into plant roots. The Journal’s subjects include, but are not restricted to, anatomy and morphology, cellular and molecular biology, biochemistry, physiology, interactions with soil, mineral nutrients, water, symbionts and pathogens, food culture, together with ecological, genetic and methodological aspects related to plant roots and rhizosphere. Work at any scale, from the molecular to the community level, is welcomed.