Claim · model-written summary
Diseased Lonicera leaves initially exhibited chlorotic spots, white mycelia and fungal spores.
- Taxon
- Lonicera japonica
Lonicera japonicat0 - Organ / stage
- leavese0
- Outcome
- chlorotic spots and gradual development of visible white mycelia and powdery substances (fungal spores)e0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The initial symptoms were of chlorotic spots and gradual development of visible white mycelia and powdery substances (fungal spores) were observed on the leaves.”
t0“Lonicera japonica”
Title
First Report of Leaf Rot on Lonicera japonica Caused by Rhizopus arrhizus in China
Xiaoxue Dai; Xiaohan Li; Bingye Yang; et al. Plant Disease 2023. doi:10.1094/pdis-05-23-0964-pdn
Other claims from this paper (13)
- Observation Leaf rot incidence exceeded 80% among surveyed Lonicera plants in Nanjing, China.
- Observation Brown disease spots appeared on both surfaces of Lonicera leaves, followed by wilting and leaf fall.
- Observation Eight fungal isolates with the same morphology were obtained from diseased leaves.
- Observation The fungal colony was initially white and later gray-black, with black sporangial spots appearing after two days.
- Observation The fungal colony occupied a nine-centimeter-diameter dish within 24 hours.
- Observation The pathogen's sporangia were yellow when immature and black at maturity.
- Observation The pathogen had oval spores averaging 29.6 by 35.3 micrometers, with the reported size ranges.
- Method / resource The fungal ITS sequence was deposited in GenBank as OP984201.
- Observation ITS phylogenetic analysis grouped the isolate with Rhizopus arrhizus with high bootstrap support, identifying it as R. arrhizus.
- Intervention effect Inoculated Lonicera plants developed symptoms similar to the original disease after 14 days.
- Observation The fungus recovered from artificially inoculated Lonicera leaves was verified by sequencing as the original strain.
- Observation The authors identify R. arrhizus as the cause of Lonicera leaf rot and report this disease association for the first time in China.
- Recommendation The authors suggest that identifying this fungus may help control Lonicera leaf rot.