Abstract
Mung bean (Vigna radiata (L.) R. Wilcz.) cuttings are used in rooting bioassays, and nonexperimental variability must be rigorously controlled to obtain meaningful results. This study was conducted to document bacterial disease problems of mung bean and identify the causal organisms. `Berken' seeds were surfaced sterilized and aerated 24 hr before sowing. Nine-day-old seedlings were used in rooting bioassays. Up to 10% of the seedlings and 17% of the cuttings had collapsed stems or wilted leaves. A white and two yellow (Y1 and Y2) bacteria were isolated from diseased cuttings and used in subsequent pathogenicity tests. The Y2 isolate was nonpathogenic. Stems of healthy mung beans inoculated with the white isolate turned brown and collapsed 2 days after inoculation, whereas leaves of plants inoculated with the yellow isolate wilted after 7 days. Standard biochemical and physiological tests revealed that the white isolate was Pseudomonas syringue pv. syringae van Hall and the yellow isolate was Curtobacterium flaccumfaciens subsp. flaccumfaciens (Hedges) Collins and Jones. This research is the first report of a disease in mung bean caused by P.s. pv. syringae. These results demonstrate the need or disease-free seeds being used in bioassays since both pathogens were seed-borne.
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Claims 9
Claim · model-written summary
Up to 10% of mung bean seedlings had collapsed stems or wilted leaves.
- Taxon
- MUNG BEAN
.jpg?width=60)
Vigna radiatat0 - Organ / stage
- seedlingse0
- Outcome
- collapsed stems or wilted leavese0
- Value
- 10%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Up to 10% of the seedlings and 17% of the cuttings had collapsed stems or wilted leaves.”
t0“MUNG BEAN SEEDLINGS”
Claim · model-written summary
Up to 17% of mung bean cuttings had collapsed stems or wilted leaves.
- Taxon
- MUNG BEANVigna radiatat0
- Organ / stage
- cuttingse0
- Outcome
- collapsed stems or wilted leavese0
- Value
- 17%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Up to 10% of the seedlings and 17% of the cuttings had collapsed stems or wilted leaves.”
t0“MUNG BEAN SEEDLINGS”
Claim · model-written summary
The Y2 bacterial isolate was nonpathogenic to mung bean.
- Taxon
- MUNG BEANVigna radiatat0
- Interactor
- Y2 isolatee0other
- Outcome
- nonpathogenice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Y2 isolate was nonpathogenic.”
t0“MUNG BEAN SEEDLINGS”
Claim · model-written summary
The white bacterial isolate browned and collapsed healthy mung bean stems two days after inoculation.
- Taxon
- mung beansVigna radiatae0
- Treatment
- inoculated with the white isolatee0
- Interactor
- white isolatee0pathogen
- Outcome
- Stems of healthy mung beanse0
- Direction
- turned brown and collapsede0
- Value
- 2 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stems of healthy mung beans inoculated with the white isolate turned brown and collapsed 2 days after inoculation”
t0“MUNG BEAN SEEDLINGS”
Claim · model-written summary
The yellow isolate caused leaf wilting seven days after inoculation.
- Taxon
- MUNG BEANVigna radiatat0
- Treatment
- inoculated with the yellow isolatee0
- Interactor
- yellow isolatee0pathogen
- Outcome
- leavese0
- Direction
- wiltede0
- Value
- 7 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaves of plants inoculated with the yellow isolate wilted after 7 days.”
t0“MUNG BEAN SEEDLINGS”
Claim · model-written summary
The white isolate was identified as Pseudomonas syringue pv. syringae.
- Taxon
- MUNG BEANVigna radiatat0
- Interactor
- Pseudomonas syringue pv. syringae van Halle0pathogen
- Outcome
- Pseudomonas syringue pv. syringae van Halle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the white isolate was Pseudomonas syringue pv. syringae van Hall”
t0“MUNG BEAN SEEDLINGS”
Claim · model-written summary
The yellow isolate was identified as Curtobacterium flaccumfaciens subsp. flaccumfaciens.
- Taxon
- MUNG BEANVigna radiatat0
- Interactor
- Curtobacterium flaccumfaciens subsp. flaccumfaciens
Curtobacterium flaccumfaciense0pathogen - Outcome
- Curtobacterium flaccumfaciens subsp. flaccumfaciense0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yellow isolate was Curtobacterium flaccumfaciens subsp. flaccumfaciens (Hedges) Collins and Jones.”
t0“MUNG BEAN SEEDLINGS”
Claim · model-written summary
Both identified pathogens were seed-borne in mung bean.
- Taxon
- MUNG BEANVigna radiatat0
- Outcome
- seed-bornee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both pathogens were seed-borne.”
t0“MUNG BEAN SEEDLINGS”
Claim · model-written summary
The authors recommend disease-free seeds for mung bean bioassays.
- Taxon
- MUNG BEANVigna radiatat0
- Outcome
- disease-free seeds being used in bioassayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results demonstrate the need or disease-free seeds being used in bioassays”
t0“MUNG BEAN SEEDLINGS”
The same questions in other papers
inoculation · growth · Vigna radiata (mung bean)Positive and negative results
7 papers in the same direction as this paper · 118 in the opposite direction
- positive
- positive
- positive
122 papers more in this group
See all 126 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.