scholarly journals Genetic diversity in Chilean strawberry (Fragaria chiloensis): differential response to Botrytis cinerea infection

2009 ◽  
Vol 7 (4) ◽  
pp. 886 ◽  
Author(s):  
G. González ◽  
M. Moya ◽  
C. Sandoval ◽  
R. Herrera
Keyword(s):  
Genetic Diversity ◽  
Botrytis Cinerea ◽  
Differential Response ◽  
Fragaria Chiloensis

scholarly journals Genetic diversity of a Botrytis cinerea cryptic species complex in Hungary

2012 ◽  
Vol 167 (5) ◽  
pp. 283-291 ◽  
Author(s):  
Éva Fekete ◽  
Erzsébet Fekete ◽  
László Irinyi ◽  
Levente Karaffa ◽  
Mariann Árnyasi ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Cryptic Species ◽  
Botrytis Cinerea ◽  
Species Complex ◽  
Cryptic Species Complex

scholarly journals Differential Response to Foliar Infection with Botrytis cinerea within the Genus Pelargonium

1999 ◽  
Vol 124 (1) ◽  
pp. 76-80 ◽  
Author(s):  
Michael S. Uchneat ◽  
Angelica Zhigilei ◽  
Richard Craig
Keyword(s):  
Botrytis Cinerea ◽  
Differential Response ◽  
Resistant Parent ◽  
Orthogonal Contrasts ◽  
Cross Pollination ◽  
Susceptible Control ◽  
And Control ◽  
Resistant Progeny

Foliar evaluations for Botrytis resistance of greenhouse grown plants were performed on 45 cultivars and control genotypes including diploid and tetraploid zonal (P. ×hortorum L.H. Bailey) and ivy (P. peltatum (L.) L'Hér. in Ait.) pelargoniums. Additional evaluations were performed on eight species within section Ciconium and on progeny of a susceptible by susceptible cross-pollination involving the cultivars Ben Franklin and Marilyn. Differential levels of resistance were observed. Among many genotypes that exhibited resistance, two genotypes had consistently high levels of Botrytis resistance over several experiments. These two genotypes were the diploid P. peltatum accession 86-23-1 and the tetraploid P. ×hortorum cultivar Fox. The diploid P. ×hortorum cultivar Ben Franklin was a reliable susceptible control in all experiments. Plants grown outdoors generally had higher levels of resistance than comparable greenhouse grown plants. Orthogonal contrasts indicated no trends in resistance when comparing diploid and tetraploid pelargoniums, or when comparing among ivy, zonal, and floribunda types. Genotypes patented or introduced since 1990 have greater susceptibility than older genotypes. Cross-pollinations among susceptible parents resulted in susceptible progeny, while self-pollinations of a resistant parent resulted in resistant progeny.

Antheridiogen and the breeding system in the fern genus Bommeria

1978 ◽  
Vol 56 (14) ◽  
pp. 1594-1601 ◽  
Author(s):  
Christopher H. Haufler ◽  
Gerald J. Gastony
Keyword(s):  
Genetic Diversity ◽  
Breeding System ◽  
Morphological Characters ◽  
Differential Response ◽  
Range Extension ◽  
Single Spore ◽  
Developmental Control ◽  
Monospore Culture

Gametophyte morphologies and gametangial sequences in agar cultures of Bommeria species indicated developmental control by an antheridiogen system. The first gametophytes to develop were meristematic and archegonial with ameristic, exclusively antheridial plants appearing later in the same cultures. Bommeria gametophytes were found to form precocious antheridia in response to antheridiogen A but did not respond to antheridiogens B or C. Assays of the native Bommeria antheridiogen indicate that it is an A type antheridiogen hormone and that each Bommeria species responds to the hormone produced by its congeners. Differential response by Bommeria species to dilute antheridiogen may be useful in concert with morphological characters in establishing relationships among species. Spores which establish colonies of unisexual gametophytes and fail to produce sporophytes in monospore culture suggest the presence of an obligately outcrossing breeding system. Such a breeding system, while maintaining genetic diversity, would restrict range extension of the sexually reproducing species. Only the apogamous Bommeria pedata is capable of establishing a new sporophyte plant by a single spore.

Genetic Diversity Between Botrytis cinerea Isolates from Unstored and Cold Stored Kiwi fruit

2002 ◽  
Vol 150 (11-12) ◽  
pp. 629-635 ◽  
Author(s):  
E. Baraldi ◽  
P. Bertolini ◽  
E. Chierici ◽  
B. Trufelli ◽  
D. Luiselli
Keyword(s):  
Genetic Diversity ◽  
Botrytis Cinerea ◽  
Kiwi Fruit

scholarly journals 377 Differential Response of Two Poinsettia Cultivars to Calcium Stress for Postharvest Disorders

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 457D-457
Author(s):  
Bernard Bible ◽  
Richard McAvoy
Keyword(s):  
Botrytis Cinerea ◽  
Differential Response ◽  
Mineral Nutrients ◽  
Euphorbia Pulcherrima ◽  
Calcium Stress ◽  
Plant Exposure

Poinsettia (Euphorbia pulcherrima Willd. ex Klotzch) bracts are susceptible to postharvest disorders like the pathogen Botrytis cinerea and the abiotic disorder bract necrosis that degrade plant appearance. `Freedom Red' and `Supjibi' poinsettias were grown hydroponically with Ca concentrations of 0.5 or 4 mm. Forty days after initial anthesis, plants were harvested and their bracts subdivided into true-bracts and transitional-bracts for determination of incidence of botrytis lesions and bract necrosis. Mineral nutrients in bract margins were determined only for true-bracts. Margin Ca concentrations were relatively high in true bracts only for `Supjibi' plants exposed to 4 mm Ca solutions. Botrytis incidence was increased for transitional-bracts but not true-bracts for both cultivars by plant exposure to low (0.5 mm) Ca solutions compared to control (4 mm Ca) plants. The smaller the poinsettia roots relative to shoots, the higher the incidence of botrytis for `Freedom Red' transitional-bracts and `Supjibi' true-bracts. Botrytis incidence was higher on transitional-bracts (13%) than on true-bracts (3.5%) for both cultivars exposed to low Ca, whereas the incidence of bract necrosis on `Supjibi' was the same on true-bracts and transitional-bracts in either Ca solution. Bract necrosis was not evident on `Freedom Red' plants in either the 0.5 or 4-mmmm Ca solutions, however for `Supjibi' exposure to low Ca solutions increased incidence of bract necrosis from 5.5% for controls to 19.3%. The effect of Ca stress applied to poinsettia roots was genotype dependant for bract necrosis but not for botrytis.

scholarly journals Interactions of Tomato and Botrytis cinerea Genetic Diversity: Parsing the Contributions of Host Differentiation, Domestication, and Pathogen Variation

2019 ◽  
Vol 31 (2) ◽  
pp. 502-519 ◽  
Author(s):  
Nicole E. Soltis ◽  
Susanna Atwell ◽  
Gongjun Shi ◽  
Rachel Fordyce ◽  
Raoni Gwinner ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Botrytis Cinerea ◽  
Pathogen Variation

scholarly journals Expansive Phenotypic Landscape of Botrytis cinerea Shows Differential Contribution of Genetic Diversity and Plasticity

2016 ◽  
Vol 29 (4) ◽  
pp. 287-298 ◽  
Author(s):  
Jason A. Corwin ◽  
Anushriya Subedy ◽  
Robert Eshbaugh ◽  
Daniel J. Kliebenstein
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Botrytis Cinerea ◽  
Phenotypic Variation ◽  
Genotypic Variation ◽  
Environmental Variation ◽  
In Planta ◽  
Phenotypic Differences ◽  
Relative Contribution

The modern evolutionary synthesis suggests that both environmental variation and genetic diversity are critical determinants of pathogen success. However, the relative contribution of these two sources of variation is not routinely measured. To estimate the relative contribution of plasticity and genetic diversity for virulence-associated phenotypes in a generalist plant pathogen, we grew a population of 15 isolates of Botrytis cinerea from throughout the world, under a variety of in vitro and in planta conditions. Under in planta conditions, phenotypic differences between the isolates were determined by the combination of genotypic variation within the pathogen and environmental variation. In contrast, phenotypic differences between the isolates under in vitro conditions were predominantly determined by genetic variation in the pathogen. Using a correlation network approach, we link the phenotypic variation under in vitro experimental conditions to phenotypic variation during plant infection. This study indicates that there is a high level of phenotypic variation within B. cinerea that is controlled by a mixture of genetic variation, environment, and genotype × environment. This argues that future experiments into the pathogenicity of B. cinerea must account for the genetic and environmental variation within the pathogen to better sample the potential phenotypic space of the pathogen.

scholarly journals Rapid Change in the Genetic Diversity of Botrytis cinerea Populations After the Introduction of Strains in a Tomato Glasshouse

2009 ◽  
Vol 99 (2) ◽  
pp. 185-193 ◽  
Author(s):  
V. Decognet ◽  
M. Bardin ◽  
Y. Trottin-Caudal ◽  
P. C. Nicot
Keyword(s):  
Genetic Diversity ◽  
Botrytis Cinerea ◽  
Rapid Change ◽  
Gray Mold ◽  
Disease Development ◽  
Airborne Inoculum ◽  
Wide Range ◽  
Stem Lesions ◽  
High Level

In tomato glasshouses, the population structure of airborne inoculum of Botrytis cinerea depends on the production of endogenous inoculum on diseased plants as well as on incoming exogenous inoculum. Both types of inocula may contribute differently to the development of epidemics. Two strains of B. cinerea were introduced in each of four separate compartments of an experimental tomato glasshouse. We monitored their impact on disease development and on the genetic diversity of B. cinerea populations using microsatellite markers. The naturally occurring airborne inoculum of B. cinerea displayed a high level of genetic diversity and was rapidly displaced in the glasshouse, as isolates with microsatellite profiles identical to the introduced strains amounted to 66% of the inoculum sampled from the air 14 days after inoculation and 91% of those collected from stem lesions 60 days after inoculation. This suggested an important role of secondary inoculum in disease development, which is compatible with the hypothesis of a polycyclic development of gray mold epidemics in tomato glasshouses. In controlled-environment tests on tomatoes, a wide range of aggressiveness levels was observed, both for isolates sampled from the air and from lesions on plants. Hypotheses are proposed to explain the negligible impact of naturally incoming isolates on the epidemics observed inside the four glasshouse compartments.

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