Penicillium nodositatum Valla, a new species inducing myconodules on Alnus roots

Valla, G.; Capellano, André; Hugueney, R.; Moiroud, A.

doi:10.1007/bf02203093

Cited by 24 publications

(18 citation statements)

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“…This study confirms that 'the concept of spore-positive and spore-negative strain types may need to be adapted to accommodate strain types with more variable sporangium development' as stated by van Dijk et al (1988). The myconodules resembled those described by van Dijk (1984) in the Netherlands and Capellano et al (1987) and Valla et al (1989) in France, induced by Penicillium nigricans and Penicillium nodositatum, respectively. Which species induces the 'Finnish' myconodules is not known.…”

Section: Discussionmentioning

confidence: 48%

Frankia populations in soils under different tree species?with special emphasis on soils under Betula pendula

Smolander

1990

Plant Soil

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The capacity of different soils to induce nodulation in Alnus incana was studied. Soil from stands of different tree species was sampled. The nodulation capacity was determined by inoculating grey alder seedlings growing in liquid culture with 20-fold serial soil dilutions and then counting the nodules formed.One purpose of the study was to compare the densities of infective Frankia in the soil of sites where Betula pendula was growing side by side with Alnus incana. The nodulation capacity of the soil under birch varied between 490-6500 nodulation units (nu) cm 3 of soil, and was at least as high as that under alder or even higher. The nodules were classified into three groups on the basis of nodule size and the occurrence and frequency of sporangia in the nodules. An average of 69% of the nodules belonged to the spore-negative group.Nodulation capacity was also determined for the soil under some other deciduous and some coniferous species. The nodulation capacity varied between 0-900 nu cm -3 of soil. The relationship between nodulation capacity and tree species and some soil characteristics is discussed.In addition to actinorhizal nodules, some of the soils also induced the formation of myconodules, containing a nonidentified fungus.

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Section: Discussionmentioning

confidence: 48%

Frankia populations in soils under different tree species?with special emphasis on soils under Betula pendula

Smolander

1990

Plant Soil

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“…Evans et al (2003) isolated P. aculeatum Raper & Fennell, P. glabrum (Wehmer) Westling and P. sp.1 as endophytes in stems of the cacao relative Theobroma gileri in Ecuador. A myconodule-forming endophytic species, P. nodositatum Valla, has been reported in roots of Alnus incana (Valla et al 1989, Sequerra et al 1995; this species was originally named based on taxonomic differences with other members in the genus Penicillium, and was later confirmed to belong to a homogeneous taxon (i.e., P. nodositatum) based on molecular data (Sequerra et al 1997).…”

Section: Discussionmentioning

confidence: 98%

Penicillium species endophytic in coffee plants and ochratoxin A production

Vega¹,

Posada

Peterson

et al. 2006

Mycologia

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Tissues from Coffea arabica, C. congensis, C. dewevrei and C. liberica collected in Colombia, Hawaii and at a local plant nursery in Maryland were sampled for the presence of fungal endophytes. Surface sterilized tissues including roots, leaves, stems and various berry parts were plated on yeast-malt agar. DNA was extracted from a set of isolates visually recognized as Penicillium, and the internal transcribed spacer region and partial LSU-rDNA was amplified and sequenced. Comparison of DNA sequences with GenBank and unpublished sequences revealed the presence of 11 known Penicillium species: P. brevicompactum, P. brocae, P. cecidicola, P. citrinum, P. coffeae, P. crustosum, P. janthinellum, P. olsonii, P. oxalicum, P. sclerotiorum and P. steckii as well as two possibly undescribed species near P. diversum and P. roseopurpureum. Ochratoxin A was produced by only four isolates, one isolate each of P. brevicompactum, P. crustosum, P. olsonii and P. oxalicum. The role these endophytes play in the biology of the coffee plant remains enigmatic.

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“…Afterwards, isolates recovered from roots of Alnus glutinosa were ascribed to the closely related P. nigricans [67], currently treated as a synonym of P. janczewskii. The identity of alder isolates as a new species was later advanced [68], and the name Penicillium nodositatum proposed [69]. It was found to be phylogenetically related to species in the subgenus Biverticillium [70], but not included in the mentioned taxonomic revision by Samson, et al [8].…”

Section: Endophytism Of Penicillium Species In Woody Plantsmentioning

confidence: 94%

Endophytism of Penicillium Species in Woody Plants

Nicoletti¹,

Fiorentino²,

Scognamiglio³

2014

TOMYCJ

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Abstract:The genus Penicillium is ubiquitous and its species are commonly recovered from every kind of substrate and environmental conditions. Therefore, not surprisingly, Penicillium strains are commonly reported in investigations dealing with fungal endophytic assemblages of plants in both natural and anthropic contexts. As such they are implicated in more or less effective relationships with the host, and involved in applicative issues concerning plant protection and the production of bioactive compounds to be exploited as pharmaceuticals. The available data on occurrence, biocenotic role, production and bioactivities of secondary metabolites of Penicillium strains which have been isolated as endophytes from woody plants are reviewed in the present paper in the aim to introduce the state of the art to researchers involved in this particular field.

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Penicillium nodositatum Valla, a new species inducing myconodules on Alnus roots

Cited by 24 publications

References 1 publication

Frankia populations in soils under different tree species?with special emphasis on soils under Betula pendula

Frankia populations in soils under different tree species?with special emphasis on soils under Betula pendula

Penicillium species endophytic in coffee plants and ochratoxin A production

Endophytism of Penicillium Species in Woody Plants

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