MycorrhizaeV1, Main, Corpus, bibRecord, 002060

Inoculation with arbuscular mycorrhizal fungi suppresses initiation of haustoria in the root hemiparasite Pedicularis tricolor.

Identifieur interne : 002060 ( Main/Corpus ); précédent : 002059; suivant : 002061

Inoculation with arbuscular mycorrhizal fungi suppresses initiation of haustoria in the root hemiparasite Pedicularis tricolor.

Auteurs : Ai-Rong Li ; Sally E. Smith ; F Andrew Smith ; Kai-Yun Guan

Source :

Annals of botany [ 1095-8290 ] ; 2012.

RBID : pubmed:22362663

English descriptors

KwdEn :
- Cell Enlargement (MeSH), Glomeromycota (metabolism), Hordeum (parasitology), Host-Parasite Interactions (MeSH), Mycorrhizae (metabolism), Pedicularis (growth & development), Pedicularis (microbiology), Plant Roots (microbiology), Symbiosis (MeSH).
MESH :
- growth & development : Pedicularis.
- metabolism : Glomeromycota, Mycorrhizae.
- microbiology : Pedicularis, Plant Roots.
- parasitology : Hordeum.
- Cell Enlargement, Host-Parasite Interactions, Symbiosis.

Abstract

BACKGROUND AND AIMS

Plant parasitism and arbuscular mycorrhizal (AM) associations have many parallels and share a number of regulatory pathways. Despite a rapid increase in investigations addressing the roles of AM fungi in regulating interactions between parasitic plants and their hosts, few studies have tested the effect of AM fungi on the initiation and differentiation of haustoria, the parasite-specific structures exclusively responsible for host attachment and nutrient transfer. In this study, we tested the influence of AM fungi on haustorium formation in a root hemiparasitic plant.

METHODS

Using a facultative root hemiparasitic species (Pedicularis tricolor) with the potential to form AM associations, the effects of inoculation were tested with two AM fungal species, Glomus mosseae and Glomus intraradices, on haustorium initiation in P. tricolor grown alone or with Hordeum vulgare 'Fleet' (barley) as the host plant. This study consisted of two greenhouse pot experiments.

KEY RESULTS

Both AM fungal species dramatically suppressed intraspecific haustorium initiation in P. tricolor at a very low colonization level. The suppression over-rode inductive effects of the parasite's host plant on haustoria production and caused significant growth depression of P. tricolor.

CONCLUSIONS

AM fungi had strong and direct suppressive effects on haustorium formation in the root hemiparasite. The significant role of AM fungi in haustorium initiation of parasitic plants was demonstrated for the first time. This study provides new clues for the regulation of haustorium formation and a route to development of new biocontrol strategies in management of parasitic weeds.

DOI: 10.1093/aob/mcs028
PubMed: 22362663
PubMed Central: PMC3336945

Links to Exploration step

pubmed:22362663

Le document en format XML

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<author><name sortKey="Li, Ai Rong" sort="Li, Ai Rong" uniqKey="Li A" first="Ai-Rong" last="Li">Ai-Rong Li</name>
<affiliation><nlm:affiliation>Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, PR China.</nlm:affiliation>
</affiliation>
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<author><name sortKey="Smith, Sally E" sort="Smith, Sally E" uniqKey="Smith S" first="Sally E" last="Smith">Sally E. Smith</name>
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<author><name sortKey="Smith, F Andrew" sort="Smith, F Andrew" uniqKey="Smith F" first="F Andrew" last="Smith">F Andrew Smith</name>
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<author><name sortKey="Guan, Kai Yun" sort="Guan, Kai Yun" uniqKey="Guan K" first="Kai-Yun" last="Guan">Kai-Yun Guan</name>
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<author><name sortKey="Li, Ai Rong" sort="Li, Ai Rong" uniqKey="Li A" first="Ai-Rong" last="Li">Ai-Rong Li</name>
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<author><name sortKey="Smith, Sally E" sort="Smith, Sally E" uniqKey="Smith S" first="Sally E" last="Smith">Sally E. Smith</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cell Enlargement (MeSH)</term>
<term>Glomeromycota (metabolism)</term>
<term>Hordeum (parasitology)</term>
<term>Host-Parasite Interactions (MeSH)</term>
<term>Mycorrhizae (metabolism)</term>
<term>Pedicularis (growth & development)</term>
<term>Pedicularis (microbiology)</term>
<term>Plant Roots (microbiology)</term>
<term>Symbiosis (MeSH)</term>
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<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Pedicularis</term>
<term>Plant Roots</term>
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<keywords scheme="MESH" qualifier="parasitology" xml:lang="en"><term>Hordeum</term>
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<keywords scheme="MESH" xml:lang="en"><term>Cell Enlargement</term>
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<front><div type="abstract" xml:lang="en"><p><b>BACKGROUND AND AIMS</b>
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<p>Plant parasitism and arbuscular mycorrhizal (AM) associations have many parallels and share a number of regulatory pathways. Despite a rapid increase in investigations addressing the roles of AM fungi in regulating interactions between parasitic plants and their hosts, few studies have tested the effect of AM fungi on the initiation and differentiation of haustoria, the parasite-specific structures exclusively responsible for host attachment and nutrient transfer. In this study, we tested the influence of AM fungi on haustorium formation in a root hemiparasitic plant.</p>
</div>
<div type="abstract" xml:lang="en"><p><b>METHODS</b>
</p>
<p>Using a facultative root hemiparasitic species (Pedicularis tricolor) with the potential to form AM associations, the effects of inoculation were tested with two AM fungal species, Glomus mosseae and Glomus intraradices, on haustorium initiation in P. tricolor grown alone or with Hordeum vulgare 'Fleet' (barley) as the host plant. This study consisted of two greenhouse pot experiments.</p>
</div>
<div type="abstract" xml:lang="en"><p><b>KEY RESULTS</b>
</p>
<p>Both AM fungal species dramatically suppressed intraspecific haustorium initiation in P. tricolor at a very low colonization level. The suppression over-rode inductive effects of the parasite's host plant on haustoria production and caused significant growth depression of P. tricolor.</p>
</div>
<div type="abstract" xml:lang="en"><p><b>CONCLUSIONS</b>
</p>
<p>AM fungi had strong and direct suppressive effects on haustorium formation in the root hemiparasite. The significant role of AM fungi in haustorium initiation of parasitic plants was demonstrated for the first time. This study provides new clues for the regulation of haustorium formation and a route to development of new biocontrol strategies in management of parasitic weeds.</p>
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Inoculation with arbuscular mycorrhizal fungi suppresses initiation of haustoria in the root hemiparasite Pedicularis tricolor.

Inoculation with arbuscular mycorrhizal fungi suppresses initiation of haustoria in the root hemiparasite Pedicularis tricolor.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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