PMID- 30812798
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20191120
IS  - 0191-2917 (Print)
IS  - 0191-2917 (Linking)
VI  - 87
IP  - 8
DP  - 2003 Aug
TI  - Control of Moldy-Core Decay in Apple Fruits by beta-Aminobutyric Acids and Potassium 
      Phosphites.
PG  - 933-936
LID - 10.1094/PDIS.2003.87.8.933 [doi]
AB  - Alternaria alternata is the predominant fungal pathogen responsible for 
      moldy-core decay in the 'Red Delicious' apple fruits. The failure of registered 
      fungicides to control the disease necessitated the search for alternative 
      methods. Here we report that DL-beta-aminobutyric acids (BABA) and potassium 
      phosphite are capable of controlling moldy-core in apple fruits in the laboratory 
      and the field. Laboratory tests involving inoculation of wounded mature fruits 
      revealed that decay by A. alternata was 40 to 58% inhibited by 50 mug/ml and 
      completely inhibited by 500 mug/ml of potassium phosphite. DL-BABA, R-BABA, and 
      S-BABA at a concentration of 500 mug/ml inhibited decay formation by 82 to 90%. 
      Potassium phosphite, BABA, and S-BABA inhibited decay formation even when applied 
      6 to 48 h postinoculation. In vitro tests indicated that BABA compounds did not 
      affect conidial germination or mycelial growth, whereas potassium phosphite 
      partially inhibited both developmental stages of the fungus. Results suggest that 
      BABA inhibits fruit decay development indirectly, probably by inducing resistance 
      in the host tissue, whereas potassium phosphite may act directly against the 
      fungus. A preliminary field trial in a commercial apple orchard showed that three 
      foliar applications of BABA or potassium phosphite, starting from the beginning 
      of bloom until petal fall, reduced the number of fruits infected with moldy-core 
      by 40 and 60%, respectively, relative to fruits from nontreated control trees. 
      Results suggest that potassium phosphite and BABA could provide adequate control 
      of moldy-core disease in apple.
FAU - Reuveni, M
AU  - Reuveni M
AD  - Golan Research Institute, University of Haifa, P.O. Box 97, Katzrin 12900, 
      Israel.
FAU - Sheglov, D
AU  - Sheglov D
AD  - Golan Research Institute, University of Haifa, P.O. Box 97, Katzrin 12900, 
      Israel.
FAU - Cohen, Y
AU  - Cohen Y
AD  - Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan Israel.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Plant Dis
JT  - Plant disease
JID - 9882809
OTO - NOTNLM
OT  - (L.) Mill. var. (Borkh.) Mansf
OT  - disease control
OT  - induced resistance
EDAT- 2003/08/01 00:00
MHDA- 2003/08/01 00:01
CRDT- 2019/03/01 06:00
PHST- 2019/03/01 06:00 [entrez]
PHST- 2003/08/01 00:00 [pubmed]
PHST- 2003/08/01 00:01 [medline]
AID - 10.1094/PDIS.2003.87.8.933 [doi]
PST - ppublish
SO  - Plant Dis. 2003 Aug;87(8):933-936. doi: 10.1094/PDIS.2003.87.8.933.