Co-inoculation with a bacterium and arbuscular mycorrhizal fungi improves root colonization, plant mineral nutrition, and plant growth of a Cyperaceae plant in an ultramafic soil

被引：28

作者：

Bourles, Alexandre ^{[1
]}

Guentas, Linda ^{[1
,2
]}

Charvis, Cesar ^{[1
]}

Gensous, Simon ^{[3
]}

Majorel, Clarisse ^{[1
]}

Crossay, Thomas ^{[1
]}

Cavaloc, Yvon ^{[1
]}

Burtet-Sarramegna, Valerie ^{[1
]}

Jourand, Philippe ^{[4
]}

Amir, Hamid ^{[1
]}

机构：

[1] Univ Nouvelle Caledonie, Inst Sci Exactes & Appl, BP R4, F-98851 Noumea, Nouvelle Caledo, New Caledonia

[2] Univ Toulon & Var, Lab MAPIEM EA 4323, SeaTech Ecole Ingenieurs, BP 20132, F-83957 La Garde, France

[3] Inst Agron Neo Caledonien, Equipe ARBOREAL, Grp EcoRCE, BP 73, F-98890 Paita, Nouvelle Caledo, France

[4] IRD, LSTM, UMR040, Campus Int Baillarguet,TA A-82-J, F-34398 Montpellier 05, France

来源：

MYCORRHIZA | 2020年 / 30卷 / 01期

关键词：

Mycorrhiza helper bacteria; Cyperaceae; New Caledonia; Plant nutrition; Metal alleviation; Tetraria comosa; HELPER BACTERIA; COSTULARIA SPP; NEW-CALEDONIA; TOLERANCE; RHIZOSPHERE; ADAPTATION; PHOSPHORUS; SERPENTINE; ACQUISITION; MECHANISMS;

D O I：

10.1007/s00572-019-00929-8

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The ecological restoration of nickel mining-degraded areas in New Caledonia is strongly limited by low availability of soil mineral nutrients, metal toxicity, and slow growth rates of native plant species. In order to improve plant growth for restoration programs, special attention was paid to interactions between plant and soil microorganisms. In this study, we evaluated the influence of inoculation with Curtobacterium citreum BE isolated from a New Caledonian ultramafic soil on arbuscular mycorrhizal symbiosis and growth of Tetraria comosa, an endemic sedge used in restoration programs. A greenhouse experiment on ultramafic substrate was conducted with an inoculum comprising two arbuscular mycorrhizal fungi (AMF) species isolated from New Caledonian ultramafic soils: Rhizophagus neocaledonicus and Claroideoglomus etunicatum. The effects on plant growth of the AMF and C. citreum BE inoculated separately were not significant, but their co-inoculation significantly enhanced the dry weight of T. comosa compared with the non-inoculated control. These differences were positively correlated with mycorrhizal colonization which was improved by C. citreum BE. Compared with the control, co-inoculated plants were characterized by better mineral nutrition, a higher Ca/Mg ratio, and lower metal translocation. However, for Ca/Mg ratio and metal translocation, there were no significant differences between the effects of AMF inoculation and co-inoculation.

引用

页码：121 / 131

页数：11

共 62 条

[1]

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[2]

Amir H., 1997, ECOLOGY ULTRAMAFIC M, P79

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