אסיף מאגר המחקר החקלאי

In vivo suppression of plant virus transmissibility by an anti-TMW factor occurring in an inoculative vector's body

Year:

1972

Source of publication :

Authors :

Volume :

47

Co-Authors:

Marco, S.
Cohen, S.
Harpaz, I.
Birk, Y.

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Abstract:

Studies were carried out on the in vivo suppression of tomato yellow leaf curl virus (TYLCV) in its whitefly vector by an anti-TMV factor occurring in the body of TYLCV-inoculative insects. The factor was designated as "periodic acquisition related factor-a" (PARFa). PARFa suppressed TYLCV-inoculativity when injected into whiteflies prior to or even after acquisition of the virus. The formation of PARFa in whiteflies could be provoked by membrane-ingestion of PARF, another antiviral factor, the presence of which had been previously demonstrated in TYLCV-carrying whiteflies. It is suggested that both antiviral factors (PARF and PARFa) are the products of a chain of reactions that take place following the entry of TYLCV into the whitefly's body. © 1972.

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