Effects of inoculum concentration, temperature, plant age and interrupted wetness on infection of lentil (<i>Lens culinaris</i>) by<i>Botrytis</i>spp. Conidia

Davidson, Jenny; Krysinska-Kaczmarek, M.

doi:10.1071/ap07039

Cited by 16 publications

(12 citation statements)

References 9 publications

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“…For lentil, the relative contribution of B. fabae and B. cinerea to BGM is less clear, with reports of the major causal Botrytis pathogen in some lentil-growing regions being B. cinerea (Bayaa and Erskine, 1998;Tivoli et al, 2006). In Australia, both species can be found on BGM-infected lentil (Lindbeck et al, 2008), and Davidson and Krysinska-Kaczmarek (2007) demonstrated that both species could infect and produce BGM symptoms under controlled conditions (Davidson and Krysinska-Kaczmarek, 2007). For lentil production in Canada, B. fabae is suspected to be more important than B. cinerea (Davidson and Krysinska-Kaczmarek, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Research has shown that BGM-infected lentil crops and crop residues contain both B. fabae and B. cinerea conidia based on species identification by conidial size (Lindbeck et al, 2008(Lindbeck et al, , 2009). In addition, both B. fabae and B. cinerea can infect lentil with similar levels of aggressiveness and there is variability among B. fabae isolates in aggressiveness (Davidson and Krysinska-Kaczmarek, 2007). There is consequently an increased risk of BGM in lentil crops in areas where faba beans are grown and chocolate spot disease epidemics are common.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Growth Morphology and Pathology, and Draft Genome Sequencing of Botrytis fabae, the Causal Organism of Chocolate Spot of Faba Bean (Vicia faba L.)

et al. 2020

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Chocolate spot is a major fungal disease of faba bean caused by the ascomycete fungus, Botrytis fabae. B. fabae is also implicated in botrytis gray mold disease in lentils, along with B. cinerea. Here we have isolated and characterized two B. fabae isolates from chocolate spot lesions on faba bean leaves. In plant disease assays on faba bean and lentil, B. fabae was more aggressive than B. cinerea and we observed variation in susceptibility among a small set of cultivars for both plant hosts. Using light microscopy, we observed a spreading, generalized necrosis response in faba bean toward B. fabae. In contrast, the plant response to B. cinerea was localized to epidermal cells underlying germinated spores and appressoria. In addition to the species characterization of B. fabae, we produced genome assemblies for both B. fabae isolates using Illumina sequencing. Genome sequencing coverage and assembly size for B. fabae isolates, were 27x and 45x, and 43.2 and 44.5 Mb, respectively. Following genome assembly and annotation, carbohydrate-active enzyme (CAZymes) and effector genes were predicted. There were no major differences in the numbers of each of the major classes of CAZymes. We predicted 29 effector genes for B. fabae, and using the same selection criteria for B. cinerea, we predicted 34 putative effector genes. For five of the predicted effector genes, the pairwise dN/dS ratio between orthologs from B. fabae and B. cinerea was greater than 1.0, suggesting positive selection and the potential evolution of molecular mechanisms for host specificity in B. fabae. Furthermore, a homology search of secondary metabolite clusters revealed the absence of the B. cinerea phytotoxin botrydial and several other uncharacterized secondary metabolite biosynthesis genes from B. fabae. Although there were no obvious differences in the number or proportional representation of different transposable element classes, the overall proportion of AT-rich DNA sequence in B. fabae was double that of B. cinerea.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of Growth Morphology and Pathology, and Draft Genome Sequencing of Botrytis fabae, the Causal Organism of Chocolate Spot of Faba Bean (Vicia faba L.)

et al. 2020

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“…Crops sown early or with dense canopies appear worst affected (Lindbeck et al 2003;) and symptoms are exaggerated by the presence of senescent material (Davidson et al 2004c). Controlled experiments indicate the conidia can survive on leaf material for a significant period (Davidson and Krysinska-Kaczmarek 2007) indicating disease may rapidly appear in the field if conditions are conducive.…”

Section: Lentil Pathologymentioning

confidence: 96%

“…Both B. cinerea (teleomorph Botryotinia fuckeliana) and B. fabae are regarded as the major causal pathogens of BGM on lentil in Australia (Davidson et al 2004b;Davidson and Krysinska-Kaczmarek 2007;Lindbeck et al 2003). The presence of both pathogens is most likely due to frequency of faba bean (Vicia faba) and vetch (Vicia sativa) in the southern Australian cropping regime, both of which are hosts to B. fabae.…”

Section: Lentil Pathologymentioning

confidence: 98%

“…BGM occurs during spring, with an optimum temperature range of 15-25°C (Davidson and Krysinska-Kaczmarek 2007), after crop canopies have closed over providing a humid environment. Crops sown early or with dense canopies appear worst affected (Lindbeck et al 2003;) and symptoms are exaggerated by the presence of senescent material (Davidson et al 2004c).…”

Section: Lentil Pathologymentioning

confidence: 99%

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Advances in winter pulse pathology research in Australia

Salam¹,

Davidson

Thomas³

et al. 2011

Australasian Plant Pathol.

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Pulse crops in Australian broad-acre agriculture are a relatively small but essential component of presentday farming systems. Winter pulses, particularly the five accounted for in this review, dominate pulse area and production in this country. The Australian pulse industry has experienced devastating epidemics of diseases such as lupin anthracnose and chickpea ascochyta blight. In addition, many other diseases have appeared regionally. Research on various aspects was directed towards managing these diseases in individual regions, states and nationally. This review addresses advances in pathology related to bacterial, fungal and viral pathogens in lupins, chickpeas, field peas, lentils and faba beans. In addition to fundamental epidemiological and disease control studies, this paper includes molecular studies and quantitative epidemiology leading to disease modelling and disease forecasting. It also highlights the efforts undertaken recently by pulse pathologists in Australia to strengthen collaborative research nation-wide.

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The History and Pedigree of Australian Lentil Cultivars

Thackwray,

Materne,

Shunmugam

et al. 2024

Legume Science

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Lentils are an ancient, edible grain legume, consumed worldwide in an array of dishes as either whole or split seed. While India and Canada are the largest modern‐day producers, Australia is a close third and the second largest exporter of lentil globally. An overview of lentil introduction cultivar development and production in Australia since the 1960s is presented. This commenced with obtaining international germplasm, and in the 1970s, Australia participated in the ICARDA‐led Food Legume Improvement Program (FLIP), which saw the release of nine varieties in the span of a decade. The first local breeding efforts in Australia commenced in the 1990s through the Coordinated Improvement Program for Australian Lentils (CIPAL), which transitioned into Pulse Breeding Australia (PBA) in the 2000s, and saw the first Australian‐bred varieties released in 2008. Currently, Agriculture Victoria's National Lentil Breeding Program and Grains Innovation Australia (GIA) breed and release varieties for Australian lentil growers, and future perspectives for their programmes are presented. One of the main diseases of lentil is Ascochyta blight, which is caused by the fungus Ascochyta lentis. The discovery of a major avirulence gene within Australian A. lentis populations which determines pathotype has allowed recent categorisation of a collection of isolates, and their response to Australian varieties is discussed. The narrowing gene pool and viability of interspecific hybridisation of Australian lentil is additionally explained. Taken together, this review summarises the history and pedigree of Australian varieties and lentil breeding, the impact of major disease pathotypes on cultivar utility and the pursuits of public and private lentil breeding initiatives.

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Effects of inoculum concentration, temperature, plant age and interrupted wetness on infection of lentil (Lens culinaris) byBotrytisspp. Conidia

Cited by 16 publications

References 9 publications

Characterization of Growth Morphology and Pathology, and Draft Genome Sequencing of Botrytis fabae, the Causal Organism of Chocolate Spot of Faba Bean (Vicia faba L.)

Characterization of Growth Morphology and Pathology, and Draft Genome Sequencing of Botrytis fabae, the Causal Organism of Chocolate Spot of Faba Bean (Vicia faba L.)

Advances in winter pulse pathology research in Australia

The History and Pedigree of Australian Lentil Cultivars

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