Arid
DOI10.1007/s00572-012-0434-2
The role of phosphorus in the ectendomycorrhiza continuum of desert truffle mycorrhizal plants
Navarro-Rodenas, Alfonso1; Perez-Gilabert, Manuela2; Torrente, Pilar1; Morte, Asuncion1
通讯作者Morte, Asuncion
来源期刊MYCORRHIZA
ISSN0940-6360
EISSN1432-1890
出版年2012
卷号22期号:7页码:565-575
英文摘要

The influence of inorganic and organic phosphorus (P) and the absence of P in the culture medium on the type of mycorrhizal colonization formed (ecto-, ectendo-, or endomycorrhiza) during Helianthemum almeriense x Terfezia claveryi symbiosis in in vitro conditions was analyzed. This is the first time that the relative proportions of the different mycorrhizal types in mycorrhizal roots of H. almeriense have been quantified and statistically analyzed. The relative proportions of the mycorrhizal types depended on the P source in the medium, suggesting that it is the organic P form that induces the formation of intracellular colonization. The above association should be considered as a continuum between intra- and intercellular colonizations, the most appropriate term for defining it being ectendomycorrhiza. The influence of the endogenous concentration of P on plant growth was also analyzed. P translocation was observed from shoot to roots, especially in mycorrhizal plants because mycorrhizal roots showed higher growth than non-mycorrhizal roots and/or because of an extra P demand from mycelium inside the roots. Soluble and cell wall acid phosphatases activities from H. almeriense roots were kinetically characterized at optimum pH (5.0), using p-nitrophenyl phosphate as substrate, with K (m) values of 3.4 and 1.8 mM, respectively. Moreover, the plant acid phosphatase and fungal alkaline phosphatases activities were histochemically localised in mycorrhizal H. almeriense roots by fluorescence with enzyme-labelled fluorescence substrate.


英文关键词Ectendomycorrhiza Inorganic phosphorous Phytate Acid phosphatase Alkaline phosphatase Desert truffle
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000310089200008
WOS关键词ACID-PHOSPHATASE ; ALKALINE-PHOSPHATASE ; TERFEZIA-CLAVERYI ; ARBUSCULAR MYCORRHIZA ; ORGANIC PHOSPHORUS ; HELIANTHEMUM ; GROWTH ; ROOT ; ASSOCIATIONS ; EFFICIENCY
WOS类目Mycology
WOS研究方向Mycology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/174126
作者单位1.Univ Murcia, Fac Biol, Dept Biol Vegetal Bot, E-30100 Murcia, Spain;
2.Univ Murcia, Fac Biol, Dept Bioquim & Biol Mol A, E-30100 Murcia, Spain
推荐引用方式
GB/T 7714
Navarro-Rodenas, Alfonso,Perez-Gilabert, Manuela,Torrente, Pilar,et al. The role of phosphorus in the ectendomycorrhiza continuum of desert truffle mycorrhizal plants[J],2012,22(7):565-575.
APA Navarro-Rodenas, Alfonso,Perez-Gilabert, Manuela,Torrente, Pilar,&Morte, Asuncion.(2012).The role of phosphorus in the ectendomycorrhiza continuum of desert truffle mycorrhizal plants.MYCORRHIZA,22(7),565-575.
MLA Navarro-Rodenas, Alfonso,et al."The role of phosphorus in the ectendomycorrhiza continuum of desert truffle mycorrhizal plants".MYCORRHIZA 22.7(2012):565-575.
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