EFFECTS OF ARBUSCULAR MYCORRHIZAL FUNGAL INOCULATION ON GROWTH AND NUTRIENT UPTAKE OF TWO EPHEMERAL PLANTS

doi:10.3773/j.issn.1005-264x.2008.03.014

Abstract

Abstract:

Aims We investigated the effects of arbuscular mycorrhizal fungal (AMF) inoculation on growth and nutrient uptake in Plantago minuta and Erodium oxyrrhynchum, the most important ephemeral plants in Junggar Basin desert.

Methods We inoculated with two AM fungi, Glomus etunicatum (BEG168) and G. mosseae (BEG167), as well as mixture of both species (M).

Important findings Mycorrhizal colonization rates were 22%-60% and typical mycorrhizal structures were formed. Inoculation of both AM fungi improved plant vegetative growth by increasing biomass and plant height. Both plant species had significantly increased N and P concentrations. Seed number per potted plant of P. minuta inoculated with both AM fungi separately and together was significantly higher by 67%, 50% and 78%, respectively, than in non-inoculated plants. We conclude that AM fungi enhanced the two spring ephemeral plants in the extreme dry, nutrient-poor desert environments by improving N and P uptake and increasing seed number, which is important for maintaining populations.

Key words: arbuscular mycorrhizal fungi, ephemeral plants, mycorrhizal effectiveness, Plantago minuta, Erodium oxyrrhynchum

CHEN Zhi-Chao, SHI Zhao-Yong, TIAN Chang-Yan, FENG Gu. EFFECTS OF ARBUSCULAR MYCORRHIZAL FUNGAL INOCULATION ON GROWTH AND NUTRIENT UPTAKE OF TWO EPHEMERAL PLANTS[J]. Chin J Plant Ecol, 2008, 32(3): 648-653.

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https://www.plant-ecology.com/EN/Y2008/V32/I3/648

Figures/Tables 7

References 23

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土壤参数 Soil parameters	pH		有机质含量 OM content (g·kg^-1)		总盐 Total salt content (g·kg^-1)		速效氮 Available N (mg·kg^-1)			速效磷 Olsen-P (mg·kg^-1)		速效钾 NH₄OAc-K (mg·kg^-1)			电导率 Electrical conductivity (ms·cm^-1)
黑山头 Heishantou	8.1		26.20		0.83		39.12			45.4		489.5			0.175
3号点 Sanhaodian	8.4		1.23		0.75		6.34			1.81		79.24			0.188

土壤参数 Soil parameters	pH		有机质含量 OM content (g·kg^-1)		总盐 Total salt content (g·kg^-1)		速效氮 Available N (mg·kg^-1)			速效磷 Olsen-P (mg·kg^-1)		速效钾 NH₄OAc-K (mg·kg^-1)			电导率 Electrical conductivity (ms·cm^-1)
黑山头 Heishantou	8.1		26.20		0.83		39.12			45.4		489.5			0.175
3号点 Sanhaodian	8.4		1.23		0.75		6.34			1.81		79.24			0.188

处理 Treatment	侵染率(%) Mycorrhizal colonization rates	根外菌丝密度 External hyphal density (m·g^-1土)
CK	1.5^c	0.21^d
BEG168	30.3^b	4.05^a
BEG167	50.4^a	2.07^c
M	26.7^b	2.50^b

处理 Treatment	侵染率(%) Mycorrhizal colonization rates	根外菌丝密度 External hyphal density (m·g^-1土)
CK	1.5^c	0.21^d
BEG168	30.3^b	4.05^a
BEG167	50.4^a	2.07^c
M	26.7^b	2.50^b

处理 Treatment	侵染率(%) Mycorrhizal colonization rates	根外菌丝密度 External hyphal density (m·g^-1土)
CK	2.3^c	0.44^d
BEG168	21.7^b	4.91^a
BEG167	59.5^a	3.32^c
M	38.3^b	4.08^b