Abstract
Trunk diseases of grapevine are caused by numerous pathogens, including Eutypa lata, Phaeomoniella chlamydospora, and species of Botryosphaeriaceae (incl. Botryosphaeria and aggregate genera), Phomopsis and Phaeoacremonium. Since infections occur mainly through pruning wounds, that have been shown by previous research to stay susceptible for up to 16 weeks after pruning, long-term pruning wound protection is required for prevention of infection. This study evaluated several biocontrol agents against a range of trunk disease pathogens in dual plate laboratory trials to determine macroscopic and microscopic interactions. The biocontrol agents had a substantial effect on all the pathogens, with a wide range of macroscopic and microscopic interactions observed. The best performing biocontrol agents were tested in two field trials. Fresh pruning wounds were treated with benomyl, Trichoderma products (Biotricho®, Vinevax® and ECO 77®) and isolates (USPP-T1 and -T2, identified as T. atroviride) and Bacillus subtilis. Seven days after treatment the pruning wounds were inoculated by spraying with spore suspensions of Neofusicoccum australe, N. parvum, Diplodia seriata, Lasiodiplodia theobromae, Eutypa lata, Phaeomoniella chlamydospora or Phomopsis viticola. Eight months after inoculation, the treatments were evaluated by isolation onto potato dextrose agar. The efficacy of the biocontrol agents was in most cases similar or superior to that observed for benomyl. Isolate USPP-T1, in particular, was very effective, reducing incidence of Ph. viticola, E. lata, Pa. chlamydospora, N. australe, N. parvum, D. seriata and L. theobromae by 69, 76, 77, 78, 80, 85 and 92%, respectively. This is the first report of biological protection of grapevine pruning wounds against this group of grapevine trunk disease pathogens.
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Claims 9
Claim · model-written summary
Biocontrol agents substantially affected the trunk pathogens in dual plate trials.
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biocontrol agents had a substantial effect on all the pathogens, with a wide range of macroscopic and microscopic interactions observed.”
t0“grapevine”
Claim · model-written summary
Biocontrol efficacy was mostly similar or superior to benomyl.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The efficacy of the biocontrol agents was in most cases similar or superior to that observed for benomyl.”
t0“grapevine”
Claim · model-written summary
USPP-T1 reduced Ph. viticola incidence by 69.
- Treatment
- USPP-T1e0
- Interactor
- Ph. viticolae0pathogen
- Outcome
- incidence of Ph. viticolae0
- Direction
- reducinge0
- Value
- 69e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolate USPP-T1, in particular, was very effective, reducing incidence of Ph. viticola, E. lata, Pa. chlamydospora, N. australe, N. parvum, D. seriata and L. theobromae by 69, 76, 77, 78, 80, 85 and 92%, respectively.”
t0“grapevine”
Claim · model-written summary
USPP-T1 reduced E. lata incidence by 76.
- Treatment
- USPP-T1e0
- Interactor
- E. lataEutypa latae0pathogen
- Outcome
- incidencee0
- Direction
- reducinge0
- Value
- 76e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolate USPP-T1, in particular, was very effective, reducing incidence of Ph. viticola, E. lata, Pa. chlamydospora, N. australe, N. parvum, D. seriata and L. theobromae by 69, 76, 77, 78, 80, 85 and 92%, respectively.”
t0“grapevine”
Claim · model-written summary
USPP-T1 reduced Pa. chlamydospora incidence by 77.
- Treatment
- USPP-T1e0
- Interactor
- Pa. chlamydosporae0pathogen
- Outcome
- incidencee0
- Direction
- reducinge0
- Value
- 77e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolate USPP-T1, in particular, was very effective, reducing incidence of Ph. viticola, E. lata, Pa. chlamydospora, N. australe, N. parvum, D. seriata and L. theobromae by 69, 76, 77, 78, 80, 85 and 92%, respectively.”
t0“grapevine”
Claim · model-written summary
USPP-T1 reduced N. australe incidence by 78.
- Treatment
- USPP-T1e0
- Interactor
- N. australe
Neofusicoccum australee0pathogen - Outcome
- incidencee0
- Direction
- reducinge0
- Value
- 78e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolate USPP-T1, in particular, was very effective, reducing incidence of Ph. viticola, E. lata, Pa. chlamydospora, N. australe, N. parvum, D. seriata and L. theobromae by 69, 76, 77, 78, 80, 85 and 92%, respectively.”
t0“grapevine”
Claim · model-written summary
USPP-T1 reduced N. parvum incidence by 80.
- Treatment
- USPP-T1e0
- Interactor
- N. parvumNeofusicoccum parvume0pathogen
- Outcome
- incidencee0
- Direction
- reducinge0
- Value
- 80e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolate USPP-T1, in particular, was very effective, reducing incidence of Ph. viticola, E. lata, Pa. chlamydospora, N. australe, N. parvum, D. seriata and L. theobromae by 69, 76, 77, 78, 80, 85 and 92%, respectively.”
t0“grapevine”
Claim · model-written summary
USPP-T1 reduced D. seriata incidence by 85.
- Treatment
- USPP-T1e0
- Interactor
- D. seriataDiplodia seriatae0pathogen
- Outcome
- incidencee0
- Direction
- reducinge0
- Value
- 85e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolate USPP-T1, in particular, was very effective, reducing incidence of Ph. viticola, E. lata, Pa. chlamydospora, N. australe, N. parvum, D. seriata and L. theobromae by 69, 76, 77, 78, 80, 85 and 92%, respectively.”
t0“grapevine”
Claim · model-written summary
USPP-T1 reduced L. theobromae incidence by 92%.
- Treatment
- USPP-T1e0
- Interactor
- L. theobromae
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=60)
Lasiodiplodia theobromaee0pathogen - Outcome
- incidencee0
- Direction
- reducinge0
- Value
- 92%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=500)
Verbatim
e0“Isolate USPP-T1, in particular, was very effective, reducing incidence of Ph. viticola, E. lata, Pa. chlamydospora, N. australe, N. parvum, D. seriata and L. theobromae by 69, 76, 77, 78, 80, 85 and 92%, respectively.”
t0“grapevine”
The same questions in other papers
biocontrol · control · VitisResults agree
4 papers in the same direction as this paper
- positive
- positive
- positive
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See all 5 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.