The inhibitory effect of Epicoccum nigrum strain XF1 against Phytophthora infestans

Li, Y.; Xia, Lei; Wang, Y. N.; Liu, X.Y.; Zhang, C.H.; Hu, Tongle; Cao, Kun

doi:10.1016/j.biocontrol.2013.09.007

Cited by 26 publications

(15 citation statements)

References 23 publications

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“…Previous studies showed that the fungus Epicoccum produces active substances such as flavipin, epirodins, epicorazines, and prodiginine to inhibit the growth of plant-pathogenic fungi [ 39 , 40 , 41 ]. Epicoccum sp.…”

Section: Discussionmentioning

confidence: 99%

The MAPKKK CgMck1 Is Required for Cell Wall Integrity, Appressorium Development, and Pathogenicity in Colletotrichum gloeosporioides

Fang

Xia

Wang

et al. 2018

Genes

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Mitogen-activated protein kinase (MAPK) signaling pathway plays key roles in sensing extracellular signals and transmitting them from the cell membrane to the nucleus in response to various environmental stimuli. A MAPKKK protein CgMck1 in Colletotrichum gloeosporioides was characterized. Phenotypic analyses of the ∆Cgmck1 mutant showed that the CgMck1 was required for vegetative growth, fruiting body development, and sporulation. Additionally, the CgMCK1 deletion mutant showed significant defects in cell wall integrity, and responses to osmotic stresses. The mutant abolished the ability to develop appressorium, and lost pathogenicity to host plants. The ∆Cgmck1 mutant also exhibited a higher sensitivity to antifungal bacterium agent Bacillus velezensis. The deletion mutants of downstream MAPK cascades components CgMkk1 and CgMps1 showed similar defects to the ∆Cgmck1 mutant. In conclusion, CgMck1 is involved in the regulation of vegetative growth, asexual development, cell wall integrity, stresses resistance, and infection morphogenesis in C. gloeosporioides.

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Section: Discussionmentioning

confidence: 99%

The MAPKKK CgMck1 Is Required for Cell Wall Integrity, Appressorium Development, and Pathogenicity in Colletotrichum gloeosporioides

Fang

Xia

Wang

et al. 2018

Genes

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“…It has indeed been proposed that some non-pathogenic seed-associated microorganisms might suppress seed infections by pathogenic organisms [ 13 , 30 ]. In fact, E. nigrum produces antifungal compounds effective against pathogenic fungi [ 29 , 31 , 32 , 33 , 34 , 35 ]. As E. nigrum was able to grow at 10 °C while no growth of other contaminant micro-organisms was apparent at this temperature, when plates were transferred to 30 °C, antifungal compounds produced by E. nigrum could have blocked growth of other micro-organisms.…”

Section: Resultsmentioning

confidence: 99%

The Caryopsis of Red-Grained Rice Has Enhanced Resistance to Fungal Attack

Gianinetti¹,

Finocchiaro²,

Maisenti³

et al. 2018

JoF

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Seed persistence in the soil is threatened by microorganisms, but the seed coat helps protect the seed from them. Although modern rice (Oryza sativa L.) cultivars have a whitish caryopsis, some varieties have a red caryopsis coat, a trait typical of wild Oryza species. The red colour is due to the oxidation of proanthocyanidins, a class of flavonoids that is found in the outer layers of the seed in many species. We aimed to assess whether these natural compounds (proanthocyanidins and proanthocyanidin-derived pigment) have some protective effect against microbial attacks. Dehulled caryopses of white-grained and red-grained rice genotypes were employed to assay fungal infection. Specifically, three white-grained rice cultivars (Perla, Augusto, and Koral) and three red-grained rice varieties (Perla Rosso, Augusto Rosso, and Koral Rosso) were used. In a first test, the caryopses were infected with Epicoccum nigrum at 10 °C, and seedling growth was then assessed at 30 °C. In a second test, the degree of infection by the mycotoxigenic fungus Fusarium sporotrichioides was assayed by measuring the accumulation of T-2/HT-2 toxins in the caryopses. Infection was performed at 10 °C to prevent rice germination while allowing fungal growth. In both the tests, red caryopses showed reduced, or delayed, infection with respect to white ones. One black-grained cultivar (Venere) was assayed for the accumulation of T-2/HT-2 toxins as well, with results corresponding to those of the red-grained rice varieties. We argue that the red pigment accumulating in the caryopsis coat, and/or the proanthocyanidins associated with it, provides a protective barrier against challenging microorganisms.

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“…E. nigrum has been commonly described as a saprophyte with ubiquitous distribution (Favaro et al, 2011). This fungal species has also been described as a biocontrol agent for various diseases which affect many crops including potato, sunflower and stone fruit (De Cal et al, 2009;Li et al, 2013;Pieckenstain et al, 2001). Its mode of action is often associated with the production of pathogen-inhibiting secondary metabolites (Alcock et al, 2015;Favaro et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…They enhance bacterial motility on surfaces, known as swarming, which facilitate the establishment of the interaction (Pelaez-Vico et al, 2016). Furthermore, endogenous strigolactones positively control nodulation of pea, alfalfa (Medicago sativa), Medicago truncatula, soybean (Glycine max) and Lotus japonicus (Foo and Davies, 2011;Liu et al, 2013;McAdam et al, 2017;Rehman et al, 2018;Soto et al, 2010;van Zeijl et al, 2015). It is also important to note that although canonical strigolactones have been reported in Arabidopsis root exudates (Goldwasser et al, 2008), these results were never confirmed with more modern analytical chemistry systems (Yoneyama et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The ability of plants to produce strigolactones affects rhizosphere community composition of fungi but not bacteria

et al. 2019

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The inhibitory effect of Epicoccum nigrum strain XF1 against Phytophthora infestans

Cited by 26 publications

References 23 publications

The MAPKKK CgMck1 Is Required for Cell Wall Integrity, Appressorium Development, and Pathogenicity in Colletotrichum gloeosporioides

The MAPKKK CgMck1 Is Required for Cell Wall Integrity, Appressorium Development, and Pathogenicity in Colletotrichum gloeosporioides

The Caryopsis of Red-Grained Rice Has Enhanced Resistance to Fungal Attack

The ability of plants to produce strigolactones affects rhizosphere community composition of fungi but not bacteria

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