Life cycle of Aecidium klugkistianum on Ligustrum and its new combination, Puccinia klugkistiana

Ji, Jing-Xin; Li, Zhuang; Wang, Qi; Yu, Li; Kakishima, Makoto

doi:10.1016/j.myc.2017.01.004

Cited by 10 publications

(2 citation statements)

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“…For confirmation of teliospore germination, the leaves with telia were placed on wet filter paper in a Petri dish and kept at room temperature (20–25°C). After microscopic observations of basidiospores production from teliospores (Figure i,j), small pieces of the telia with these basidiospores were attached to the surface of young healthy leaves of P. jezoensis for inoculation, using a similar method previously reported by Ji, Li, Wang, Li, and Kakishima (). The plants that were inoculated had been transplanted from Fenix Mountain Forest Park at the same time as R. aureum was collected and were maintained in plastic pots at Jilin Agricultural University.…”

Section: Methodsmentioning

confidence: 99%

Life cycle and taxonomy of Chrysomyxa succinea in China and phylogenetic positions of Caeoma species on Rhododendron

et al. 2020

Forest Pathology

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Rust diseases of spruce and rhododendrons caused by Chrysomyxa succinea are commonly observed in forests of northern and eastern Asia. The heteroecious life cycle of this species alternating between spermogonial and aecial stages on Picea jezoensis and uredinial and telial stages on Rhododendron aureum is confirmed for the first time in China by inoculations and phylogenetic analyses. Morphological characters of all stages are described based on specimens obtained from the field and from inoculations. Based on morphological similarities and phylogenetic analyses, Ch. zhouniensis reported on Picea asperata is treated as a synonym of Ch. succinea. Four Caeoma species on Rhododendron are included in the same phylogenetic group as species of Chrysomyxa. Therefore, these species are treated as Chrysomyxa, and four new combinations in Chrysomyxa are proposed.

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Section: Methodsmentioning

confidence: 99%

Life cycle and taxonomy of Chrysomyxa succinea in China and phylogenetic positions of Caeoma species on Rhododendron

et al. 2020

Forest Pathology

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“…However, the application of an anamorphic genus name, Caeoma Link or Aecidium Pers. to a teleomorphic genus name, Gymnosporangium which is morphologically and taxonomically different from Caeoma or Aecidium, causes great confusion in the taxonomy of rust fungi because these anamorphic genera are connected with many teleomorphic genera (Ji et al, 2017(Ji et al, , 2019Kakishima et al, 2018;Kasuya et al, 2020;Ono, 2016). Therefore, we propose a new combination in Gymnosporangium for C. mori (≡ A. mori).…”

Section: Mycoscience Vol65 (2024) Myc621mentioning

confidence: 99%

Gymnosporangium mori comb. nov. (Pucciniales) for Caeoma mori (≡ Aecidium mori) inferred from phylogenetic evidence

Kasuya,

Hosaka,

et al. 2024

Mycoscience

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Mulberry (Morus, Moraceae) is shrubs or trees consisting of about 10 species, and mainly distributed in temperate regions of Asia and North America (Nepal & Ferguson, 2012). The leaves of these plants are used as foods for silkworm larvae. Some species are also cultivated for productions of edible fruits. Specimens of a rust fungus occurred on shoots and leaves of Morus alba L. (common mulberry or silkworm mulberry) were collected in the fields of Ibaraki and Saitama Prefectures, Japan in early summer of 2021 and 2023 (Fig. 1A). Morphological observations were made for the identification of this rust fungus using light microscopy and scanning electron microscopy by the same methods reported by Uzuhashi et al. (2022). Spermogonia were not found on specimens. Sori surrounded with fragile and short peridia (Fig. 1B, D, E) were amphigenous, densely formed, rounded to elliptical and cupulate. Peridial cells were loosely conjunct and their inner walls were verrucose. Spores (Fig. 1C, F) were catenulate, angularly globose to ellipsoid and 11.5-20 × 8-15.5 μm (avg. 16 × 12 µm; n = 50) in size. Their walls were hyaline, verrucose and 1-1.5 μm thick.Five species of rust fungi, Phakopsora fici-erectae S. Ito & Y. Otani ex S. Ito & Muray., Cerotelium fici (Castagne) Arthur, Aecidium mori (Barclay) Barclay (≡ Caeoma mori Barclay), Uredo moricola Henn. and U. morifolia Sawada have been reported on species of Morus in Japan (Hiratsuka et al., 1992;Ito, 1950). Among them sorus structures of P. fici-erectae, C. fici, U. moricola and U. morifolia are different from the rust fungus collected on M. alba in Ibaraki and Saitama Prefectures. Namely, P. fici-erectae and C. fici has peripheral paraphyses in sori and two Uredo species have no peridium in their sori. Sorus structures of this rust fungus having fragile peridia is identical with descriptions of A. mori (Hiratsuka et al., 1992;Ito, 1950;Mordue, 1991). The morphology and size of spores are also similar to those of its descriptions. Therefore, the present rust fungus on M. alba is identified as A. mori. Specimens used in this observation were deposited in the Mycological Herbarium of the Department of Botany, National Museum of Nature and Science, Tsukuba, Japan (TNS).Caeoma mori was originally described as a rust fungus on mulberry in 1890 by Barclay. Although this species was recorded as Uredo mori (Barclay) Sacc. in 1891 by Saccardo, Barclay (1891) treated this species as same species as A. mori, described by himself, because of the presence of peridia in the sori. Aecidium mori has been widely recorded on many species of Morus and Broussonetia (Moraceae) in Asia (Hiratsuka et al., 1992;Ito, 1950;Mordue, 1991;Tai, 1979). Sori and spores of this species are morphologically as same as Aecidium-type by Cummins and Hiratsuka (1983) because of catenulate spores and presence of peridia. Therefore, spores are morphologically categorized as aeciospores which are usually produced after spermogonial formation and produce uredinia after their infections to plants. However, no spermogon...

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Life cycle of Nothoravenelia japonica and its phylogenetic position in Pucciniales, with special reference to the genus Phakopsora

et al. 2019

Mycol Progress

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Life cycle of Aecidium klugkistianum on Ligustrum and its new combination, Puccinia klugkistiana

Cited by 10 publications

References 2 publications

Life cycle and taxonomy of Chrysomyxa succinea in China and phylogenetic positions of Caeoma species on Rhododendron

Life cycle and taxonomy of Chrysomyxa succinea in China and phylogenetic positions of Caeoma species on Rhododendron

<i>Gymnosporangium mori</i> comb. nov. (<i>Pucciniales</i>) for <i>Caeoma mori</i> (≡ <i>Aecidium mori</i>) inferred from phylogenetic evidence

Life cycle of Nothoravenelia japonica and its phylogenetic position in Pucciniales, with special reference to the genus Phakopsora

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