Abstract
Pear anthracnose,caused by Colletotrichum gloeosporioides,occurs throughout pear-growing areas in Jiangsu and Anhui provinces during the last few years and causes significant economic losses.The objective of this study is to explore the biological characteristics of C.gloeosporioides,which would benefit further understanding of the disease and control of the disease effectively.Twenty-five strains of C.gloeosporioides were isolated and identified from the diseased leaves and pomes of the orchards in Fengxian,Jiangsu province.Three strains with dark green and thick colonies had strong pathogenicities,while 4 strains with white and thin colonies had weak pathogenicities.Fast growing colonies showed strong pathogenicities,and slowly growing colonies displayed weak pathogenicities.There was no relationship between conidia-yielding and pathogenicity.The optimum temperature for mycelia growth of C.gloeosporioides was 25-30 ℃,and the optimum pH value was 5.0-7.0.C.gloeosporioides could make use of many carbohydrates and inorganic and organic nitrogen,the optimum carbon source being sucrose,and the optimum nitrogen source being beef extract.
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Claims 11
Claim · model-written summary
Twenty-five pathogen strains were isolated and identified from diseased pear leaves and pomes.
- Organ / stage
- leaves and pomese0
- Interactor
- C.gloeosporioides
Colletotrichum gloeosporioidese0pathogen - Outcome
- strains of C.gloeosporioides were isolated and identifiede0
- Value
- Twenty-fivee0
- Setting
- Fengxian,Jiangsu provincee0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twenty-five strains of C.gloeosporioides were isolated and identified from the diseased leaves and pomes of the orchards in Fengxian,Jiangsu province”
t0“pear”
Claim · model-written summary
Dark green thick colonies had strong pathogenicity.
- Interactor
- strainse0pathogen
- Outcome
- strong pathogenicitiese0
- Value
- Three strainse0
- Qualifier
- dark green and thick coloniese0
Not reportedTaxonDirection
Verbatim
e0“Three strains with dark green and thick colonies had strong pathogenicities”
t0“pear”
Claim · model-written summary
White thin colonies had weak pathogenicity.
- Interactor
- strainse0pathogen
- Outcome
- weak pathogenicitiese0
- Value
- 4 strainse0
- Qualifier
- white and thin coloniese0
Not reportedTaxonDirection
Verbatim
e0“4 strains with white and thin colonies had weak pathogenicities”
t0“pear”
Claim · model-written summary
Fast growing colonies showed strong pathogenicity.
Not reportedTaxonDirection
Verbatim
e0“Fast growing colonies showed strong pathogenicities”
t0“pear”
Claim · model-written summary
Slowly growing colonies showed weak pathogenicity.
Not reportedTaxonDirection
Verbatim
e0“slowly growing colonies displayed weak pathogenicities”
t0“pear”
Claim · model-written summary
Conidia yield was unrelated to pathogenicity.
Not reportedTaxonDirection
Verbatim
e0“There was no relationship between conidia-yielding and pathogenicity”
t0“pear”
Claim · model-written summary
Optimal mycelial growth temperature was 25–30 ℃.
- Interactor
- C.gloeosporioidesColletotrichum gloeosporioidese0pathogen
- Outcome
- mycelia growth of C.gloeosporioidese0
- Value
- 25-30 ℃e0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimum temperature for mycelia growth of C.gloeosporioides was 25-30 ℃”
t0“pear”
Claim · model-written summary
Optimal pH for mycelial growth was 5.0–7.0.
Not reportedTaxon
Verbatim
e0“the optimum pH value was 5.0-7.0”
t0“pear”
Claim · model-written summary
The pathogen used many carbon and nitrogen sources.
- Interactor
- C.gloeosporioidesColletotrichum gloeosporioidese0pathogen
- Outcome
- make use of many carbohydrates and inorganic and organic nitrogene0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“C.gloeosporioides could make use of many carbohydrates and inorganic and organic nitrogen”
t0“pear”
Claim · model-written summary
Sucrose was the optimal carbon source.
- Outcome
- optimum carbon source being sucrosee0
Not reportedTaxon
Verbatim
e0“the optimum carbon source being sucrose”
t0“pear”
Claim · model-written summary
Beef extract was the optimal nitrogen source.
- Outcome
- optimum nitrogen source being beef extracte0
Not reportedTaxon
Verbatim
e0“the optimum nitrogen source being beef extract”
t0“pear”