Arid
DOI10.1071/BT20122
The contribution of pathogenic soil microbes to ring formation in an iconic Australian arid grass, Triodia basedowii (Poaceae)
Ross, Neil D.; Moles, Angela T.
通讯作者Moles, AT (corresponding author), UNSW Sydney, Evolut & Ecol Res Ctr, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia.
来源期刊AUSTRALIAN JOURNAL OF BOTANY
ISSN0067-1924
EISSN1444-9862
出版年2021
卷号69期号:3页码:113-120
英文摘要Ring-forming species of spinifex grasses ( Triodia spp.) are a dominant feature across much of Australia's arid and semi- arid zone. Researchers have long been curious about the mechanisms underpinning their striking growth form. However, none of the factors investigated to date provide a convincing explanation for ring formation. Here, we asked whether an accumulation of pathogenic soil microbes might impede seedling emergence and subsequent growth in the centre of Triodia basedowii rings. We collected soil from inside and outside naturally occurring spinifex rings and compared plants grown in soil with live microbes to plants grown in sterilised soil. Consistent with our hypothesis, we found that emergence of T. basedowii seedlings was lower in live soil from inside the rings than in live soil from outside the rings. Further, seedling emergence in soil from inside the rings increased significantly in response to soil sterilisation. We found no significant difference in growth between sterile and live soils. However, this might be due to a lack of power caused by high rates of seedling mortality in all treatments. Overall, our study provides evidence for the role of soil pathogens in shaping this iconic Australian grass.
英文关键词arid zone Australia culm fire hummock grassland obligate seeder seedling emergence semi-arid zone spinifex soil pathogens Triodia basedowii clonal plants
类型Article
语种英语
开放获取类型Other Gold
收录类别SCI-E
WOS记录号WOS:000634240300001
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/349674
作者单位[Ross, Neil D.; Moles, Angela T.] UNSW Sydney, Evolut & Ecol Res Ctr, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia
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GB/T 7714
Ross, Neil D.,Moles, Angela T.. The contribution of pathogenic soil microbes to ring formation in an iconic Australian arid grass, Triodia basedowii (Poaceae)[J],2021,69(3):113-120.
APA Ross, Neil D.,&Moles, Angela T..(2021).The contribution of pathogenic soil microbes to ring formation in an iconic Australian arid grass, Triodia basedowii (Poaceae).AUSTRALIAN JOURNAL OF BOTANY,69(3),113-120.
MLA Ross, Neil D.,et al."The contribution of pathogenic soil microbes to ring formation in an iconic Australian arid grass, Triodia basedowii (Poaceae)".AUSTRALIAN JOURNAL OF BOTANY 69.3(2021):113-120.
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