The arbuscular mycorrhizal fungus Glomus mosseae can enhance arsenic tolerance in Medicago truncatula by increasing plant phosphorus status and restricting arsenate uptake

被引：65

作者：

Xu, Pengliang ^{[1
]}

Christie, Peter ^{[1
,2
]}

Liu, Yu ^{[1
]}

Zhang, Junling ^{[1
]}

Li, Xiaolin ^{[1
]}

机构：

[1] China Agr Univ, Coll Resources & Environm Sci, Minist Educ, Key Lab Plant Soil Interact, Beijing 100094, Peoples R China

[2] Queens Univ Belfast, Dept Agr & Environm Sci, Belfast BT9 5PX, Antrim, North Ireland

来源：

ENVIRONMENTAL POLLUTION | 2008年 / 156卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Arbuscular mycorrhiza; Arsenate; Glomus mosseae; Medicago truncatula; Phosphate uptake;

D O I：

10.1016/j.envpol.2008.01.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A pot experiment examined the biomass and As uptake of Medicago truncatula colonized by the arbuscular mycorrhizal (AM) fungus Glomus mosseae in low-P soil experimentally contaminated with different levels of arsenate. The biomass of G. mosseae external mycelium was unaffected by the highest addition level of As studied (200 mg kg(-1)) but shoot and root biomass declined in both mycorrhizal and non-mycorrhizal plants, indicating that the AM fungus was more tolerant than M. truncatula to arsenate. Mycorrhizal inoculation increased shoot and root dry weights by enhancing host plant P nutrition and lowering shoot and root As concentrations compared with uninoculated plants. The AM fungus may have been highly tolerant to As and conferred enhanced tolerance to arsenate on the host plant by enhancing P nutrition and restricting root As uptake. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：215 / 220

页数：6

共 31 条

[1]

Adriano D., 2001, TRACE ELEMENTS TERRE

[2] Influences of arbuscular mycorrhizal fungus Glomus mosseae on growth and nutrition of lentil irrigated with arsenic contaminated water [J].

Ahmed, F. R. Sadeque ;

Killham, Ken ;

Alexander, Ian .

PLANT AND SOIL, 2006, 283 (1-2) :33-41

[3] Mycorrhizae increase arsenic uptake by the hyperaccumulator Chinese brake fern (Pteris vittata L.) [J].

Al Agely, A ;

Sylvia, DM ;

Ma, LQ .

JOURNAL OF ENVIRONMENTAL QUALITY, 2005, 34 (06) :2181-2186

[4]

ALLEN SE, 1989, CHEM ANAL ECOLOGICAL

[5] ARSENIC UPTAKE BY BARLEY SEEDLINGS [J].

ASHER, CJ ;

REAY, PF .

AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY, 1979, 6 (04) :459-466

[6] Comparison of techniques for the extraction and quantification of extra-radical mycelium of arbuscular mycorrhizal fungi in soils [J].

Boddington, CL ;

Bassett, EE ;

Jakobsen, I ;

Dodd, JC .

SOIL BIOLOGY & BIOCHEMISTRY, 1999, 31 (03) :479-482

[7] Two new genes, PHO86 and PHO87, involved in inorganic phosphate uptake in Saccharomyces cerevisiae [J].

BunYa, M ;

Shikata, K ;

Nakade, S ;

Yompakdee, C ;

Harashima, S ;

Oshima, Y .

CURRENT GENETICS, 1996, 29 (04) :344-351

[8] Relative quantitative RT-PCR to study the expression of plant nutrient transporters in arbuscular mycorrhizas [J].

Burleigh, SH .

PLANT SCIENCE, 2001, 160 (05) :899-904

[9] The arbuscular mycorrhizal fungus Glomus mosseae gives contradictory effects on phosphorus and arsenic acquisition by Medicago sativa Linn [J].

Chen, Baodong ;

Xiao, Xueyi ;

Zhu, Yong-Guan ;

Smith, F. Andrew ;

Xie, Z. Miao ;

Smith, Sally E. .

SCIENCE OF THE TOTAL ENVIRONMENT, 2007, 379 (2-3) :226-234

[10] The spatial expression patterns of a phosphate transporter (MtPT1) from Medicago truncatula indicate a role in phosphate transport at the root/soil interface [J].

Chiou, TJ ;

Liu, H ;

Harrison, MJ .

PLANT JOURNAL, 2001, 25 (03) :281-293

← 1 2 3 4 →