<i>Curvularia lunata</i>and Curvularia Leaf Spot of Maize in China

Wang, Shaoqing; Lu, Zhixiang; Liu, Bo; Wang, Xinhua; Li, Yaqian; Chen, Jie

doi:10.1021/acsomega.2c03013

Cited by 13 publications

(4 citation statements)

References 58 publications

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“…Several species of Curvularia are known to cause severe damage to oil palm seedlings, for instance, C. oryzae, C. eragostidis, and C. lunata [5,15,18]. The latter is also responsible for high yield losses on maize, particularly in China [19]. On the other hand, several species of Pestalotiopsis, including P. microspora, P. theae, and P. palmarum, were reported to cause severe damage to oil palm seedlings [7,12,14,20].…”

Section: Resultsmentioning

confidence: 99%

Genus Curvularia and Pestalotiopsis as the primary pathogen of leaf spot disease on oil palm seedlings throughout Indonesia

Priwiratama,

Wiyono,

Tondok

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Leaf spot is a major plant disease that affects oil palm seedlings. Several fungal genera, including Cercospora, Curvularia, Drechslera, Pestalotiopsis, and Phyllosticta, have been linked to leaf spot disease in oil palms worldwide. A survey was undertaken in several oil palm nurseries throughout Indonesia to discover the primary pathogen of the leaf spot disease. The result revealed that two dominating genera, Curvularia and Pestalotiopsis, were responsible for leaf spot infections on oil palm seedlings in Indonesia. Curvularia was isolated from oil palm nurseries in Sumatra, Java, Kalimantan, and Sulawesi. Curvularia isolates can be divided into five morphotypes based on colony growth and appearance. On the other hand, three major morphotypes of Pestalotiopsis were collected from Sumatra, Java, Kalimantan, Sulawesi, and Papua.

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Section: Resultsmentioning

confidence: 99%

Genus Curvularia and Pestalotiopsis as the primary pathogen of leaf spot disease on oil palm seedlings throughout Indonesia

Priwiratama,

Wiyono,

Tondok

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Curvularia infection are common fungal diseases. For instance, C. lunata infection causes leaf spots on maize 19 and root rot on Strawberry 20 . Leaf spot on Sansevieria trifasciata 11 and postharvest rot on Pineapple 21 can be caused by C. eragrostidis, while C. hawaiiensis infection leads to leaf spot on rice 22 .…”

Section: Discussionmentioning

confidence: 99%

Identification, Characterization, and Sensitivity to Phytochemicals of Novel Curvularia Species Associated with Leaf Spot Disease on Curcuma kwangsiensis

Wang,

Wei,

Wei

et al. 2024

Preprint

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A leaf spot disease affecting Curcuma kwangsiensis (Zingiberaceae) has been observed in Qinzhou City, Guangxi Province. Infected leaves exhibit yellow-brown spots that progressively expand and eventually lead to leaf death. Curvularia isolates were abtained from the diseased leaves with tissue isolation and single spore purification methods. To accurately identify these isolates, we analyzed their morphological characteristics and phylogenetic relationships using combinations of ITS, GAPDH, and EF-1α gene sequences. Phylogenetic analysis showed that the investigated strains formed a distinct clade separate from other recognized Curvularia species. Furthermore, the strains exhibited differences in conidiophore size and conidia shape/size. Based on phylogenetic studies, morphology, and pathogenicity tests, the pathogens were identified as a new species named Curvularia qinzhouensis. Optimal conditions for mycelial growth were observed at 30°C and pH 8. The sensitivity of the pathogen to various phytochemicals was also examined. Honokiol, thymol, and citral demonstrated effective antifungal effects, with EC50 values of 6.72 ± 1.75, 25.74 ± 4.30, and 54.24 ± 4.69 µg/ml, respectively. The present investigation provides the first report of leaf spot disease on C. kwangsiensis caused by C. qinzhouensis, and valuable insights for the prevention and control of this disease.

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“…Curvularia lunata is a hemibiotrophic pathogenic fungus that causes leaf spot on maize, rice, sorghum and barley (Lanisnik Rizner & Wheeler, 2003 ). Curvularia leaf spot caused by C. lunata is one of the common foliar fungal diseases of maize, is widely distributed worldwide and is associated with a severe yield loss, especially in warm and humid maize production regions (Henrickson & Koehler, 2020 ; Macri & Di Lenna, 1974 ; Wang, Lu, et al., 2022 ). Upon landing on the maize leaf surface, C. lunata conidia germinate and differentiate into appressoria, which breach the host cuticle and cell wall, then form invasive primary hyphae inside plant cells.…”

Section: Introductionmentioning

confidence: 99%

SreC‐dependent adaption to host iron environments regulates the transition of trophic stages and developmental processes of Curvularia lunata

Sun,

Zhao,

Liu

et al. 2024

Molecular Plant Pathology

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Plant pathogens are challenged by host‐derived iron starvation or excess during infection, but the mechanism of plant pathogens rapidly adapting to the dynamic host iron environments to assimilate iron for invasion and colonization remains largely unexplored. Here, we found that the GATA transcription factor SreC in Curvularia lunata is required for virulence and adaption to the host iron excess environment. SreC directly binds to the ATGWGATAW element in an iron‐dependent manner to regulate the switch between different iron assimilation pathways, conferring adaption to host iron environments in different trophic stages of C. lunata. SreC also regulates the transition of trophic stages and developmental processes in C. lunata. SreC‐dependent adaption to host iron environments is essential to the infectious growth and survival of C. lunata. We also demonstrate that CgSreA (a SreC orthologue) plays a similar role in Colletotrichum graminicola. We conclude that Sre mediates adaption to the host iron environment during infection, and the function is conserved in hemibiotrophic fungi.

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Curvularia lunataand Curvularia Leaf Spot of Maize in China

Cited by 13 publications

References 58 publications

Genus Curvularia and Pestalotiopsis as the primary pathogen of leaf spot disease on oil palm seedlings throughout Indonesia

Genus Curvularia and Pestalotiopsis as the primary pathogen of leaf spot disease on oil palm seedlings throughout Indonesia

Identification, Characterization, and Sensitivity to Phytochemicals of Novel Curvularia Species Associated with Leaf Spot Disease on Curcuma kwangsiensis

SreC‐dependent adaption to host iron environments regulates the transition of trophic stages and developmental processes of Curvularia lunata

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