Simultaneous Stimulation of Endophytic Cryptodiaporthe hystrix and Inhibition of acer Macrophyllum Callus in Dual Culture

Sieber, Thomas N.; Sieber-Canavesi, F.; Dorworth, C. E.

doi:10.2307/3760047

Cited by 28 publications

(27 citation statements)

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“…Tests of pathogenicity of D. acerina conducted at the Pacific Forestry Centre, Victoria, B.C., led to what might seem contradictory results. None of the D. acerina strains tested significantly inhibited growth of cambial callus of A. macrophyllum in tissue culture (Sieber et al 1990). On the other hand, stem wound inoculations with endophytic D. acerina isolates induced the formation of circumferential cankers on 60-80% of inoculated 6-month-old A. macrophyllum seedlings (T.N.…”

Section: Discussionmentioning

confidence: 98%

An ecological study about assemblages of endophytic fungi in Acer macrophyllum in British Columbia: in search of candidate mycoherbicides

Sieber¹,

Dorworth²

1994

Can. J. Bot.

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Healthy 2-to 3-year-old twig pieces with adherent foliage were collected from 3-to 10-year-old Acer tr~acrophylllrtt~ at seven sites in coastal British Columbia and examined for the presence of endophytic fungi. Eighty-three percent of the leaves and 52 % of the twigs were colonized by endophytic fungi. Fungal assemblages of leaves were dominated by Phorr~opsis spp., whereas Diplorlinn ncerina was most frequently isolated from twigs. Cr3,ptosporiopsis nbietitln. Glo~nerella cingulatn (with Colletotrichurn gloeosporioirles anamorph), and Phornopsis spp. also occurred quite frequently in twigs at some sites. No correlations between weather conditions and any of the endophyte species were detected. Diplodinn acerina and G. cirzgulnta were the only two species with a certain potential to be employed as mycoherbicides: D. nceritla is distributed over most of its hosts' range, and frequency and density of colonization are high among and within trees and some degree of virulence is present; some formae speciales of G. cingulnta are already used as mycoherbicides. la cBte de la Colombie-Britannique, les auteurs ont rCcoltC des rameaux en santC, avec leurs feuilles, agCs de 2-3 ans, sur des tiges d'Acer tnncrophyllutrz agCes de 3 i 10 ans et ils les ont examines pour dtceler la presence d e champignons endophytes. Quatre-vingt-trois pourcent des feuilles et 52 % des rameaux Ctaient colonisCs par des champignons endophytes. Les Photnopsis spp. sont les plus abondants sur les ensembles des feuilles alors que le Diplorlirln ncerinn est le plus frCquemment is016 ti partir des rameaux. Dans un bon nombre de sites on trouve Cgalement et assez frequemment les Cryptosporiopsis abietina, Glotrlerella cit~gulata (avec l'anamorphe Colletotriclntrtz gloeosporioirles) et les Photrzopsis spp. Aucune corrClation entre les conditions climatiques et les espkces d'endophytes n'a pu &tre dCcelCe. Seulement le D. aceritzn et le G. cir~gulata prCsentent un certain potentiel d'utilisation comme mycoherbicides. Le D. ncerinn se retrouve dans la majeure partie de l'aire de distribution de I'hBte et la frCquence ainsi que la densite de la colonisation sont ClevCes entre et sur les arbres et D. ncerina posskde un certain degrC de virulence; quelques forrnae speciales du G. citzgulnta sont deli utilisCes comme mycoherbicides.

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Section: Discussionmentioning

confidence: 98%

An ecological study about assemblages of endophytic fungi in Acer macrophyllum in British Columbia: in search of candidate mycoherbicides

Sieber¹,

Dorworth²

1994

Can. J. Bot.

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“…Interactions between the calli of trees and their pathogens or endophytes have been studied by Hendry et al (1993), Hrib and Rypacek (1981), Peipp and Sonnenbichler (1992) and Sieber et al (1990). Interactions between the calli of trees and their pathogens or endophytes have been studied by Hendry et al (1993), Hrib and Rypacek (1981), Peipp and Sonnenbichler (1992) and Sieber et al (1990).…”

Section: Introductionmentioning

confidence: 99%

Interactions in Dual Cultures of Endophytic Fungi with Host and Nonhost Plant Calli

et al. 1998

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Mycological Society of America is collaborating with JSTOR to digitize, preserve and extend access to Mycologia.Abstract: Undifferentiated plant cells may be used in simplified systems for studying the interactions between plants and fungi. We used plant calli for investigating the interactions between three endophytic fungi (Coniothyrium palmarum, Geniculosporium sp. and Phomopsis sp.) and their host and nonhost plants (Lamium purpureum and Teucrium scorodonia), showing that growth of these endophytes was specifically enhanced by calli of the host. Substance(s) secreted by the host calli were responsible for this growth response. The endophytes also secreted metabolites into the medium. These were toxic to the plant calli, irrespective of whether it was a host or nonhost interaction. Further tests demonstrated the nonspecific herbicidal nature of these substances.

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“…W kilku pracach badano tak¿e zachowanie siê kalusa w obecnooeci grzybów endofitycznych (Sieber et al 1990, Hendry et al 1993, Peters et al 1998. Metoda kultur tkankowych dostarcza cennych informacji na temat wzrostu grzybni i reakcji kalusa w kulturach tkankowych i pozwala oszacowaae mechanizmy obronne drzew na poziomie embrionalnym.…”

Section: Wstêpunclassified

“…Badania nad wzrostem endofitów w obecnooeci kalusa-gopodarza by³y podejmowane przez kilku badaczy (Sieber et al 1990;Hendry et al 1993;Peters et al 1998). Wyniki tych badañ by³y dooeae rozbie¿ne.…”

Section: Dyskusjaunclassified

Interactions among three genotypes of Abies alba callus and fungi with different ecological status

Nawrot-Chorabik¹,

Jankowiak²

2010

Forest Research Papers

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Interakcje pomiêdzy kalusem trzech genotypów Abies alba a grzybami o ró¿nym statusie ekologicznymInteractions among three genotypes of Abies alba callus and fungi with different ecological status Abstract. Callus cultures derived from three Abies alba genotypes were co-cultivated with several fungi of different ecological status. Growth of Heterabasidion parviporum, Ophiostoma piceae and Pesotum sp. was stimulated, whilst Heterobasidon abietinum and Geosmithia sp. were unaffected by the presence of callus (statistical analyses for these 2 fungi gave no difference and a marginally-significant different respectively).Fir callus inhibited the growth of Pesotum fragrans and Rizosphaera macrospora. Otherwise, there were significant differences between the callus genotypes with respect to the growth of fungi and colonization of fir callus. Fungi H. abietinum, O. piceae, R. macrospora and Geosmithia sp. first colonized callus belonging to genotype G6. In contrast, fungal species: P. fragrans, Pesotum sp., Geosmithia sp. and H. parviporum quickly colonized callus derived from the genotype G5. Across all genotypes, callus was colonized in the shortest period of time by the fungus H. parviporum (causing callus necrosis after 6-9 days), the slowest was Pesotum sp. (causing callus necrosis after 60-81 days). The importance of these results regarding pathogenicity and behaviour in vivo of these fungi is discussed.

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Simultaneous Stimulation of Endophytic Cryptodiaporthe hystrix and Inhibition of acer Macrophyllum Callus in Dual Culture

Cited by 28 publications

References 11 publications

An ecological study about assemblages of endophytic fungi in Acer macrophyllum in British Columbia: in search of candidate mycoherbicides

An ecological study about assemblages of endophytic fungi in Acer macrophyllum in British Columbia: in search of candidate mycoherbicides

Interactions in Dual Cultures of Endophytic Fungi with Host and Nonhost Plant Calli

Interactions among three genotypes of Abies alba callus and fungi with different ecological status

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