Résumé
BACKGROUND Phelipanche ramosa L. (Pomel) is a noxious parasitic weed in field and vegetable crops in Mediterranean countries. Control of this pest is complex and far from being achieved, and new environmentally-friendly strategies are being sought. The present study evaluates the possibility of using (±)-catechins as a natural herbicide against broomrapes.
RESULTS The results show that (±)-catechins have no effect on GR24-induced germination over a wide concentration range (10−4 to 10−10 m), nor on radicle elongation after germination, but strongly inhibit, at 10−4 and 10−5 m, prehaustorium formation in response to the haustorium-inducing factor, cis/trans-zeatin. Accordingly, pot experiments involving the supplies of 10−5 m of (±)-catechins to tomato plants infested or not with P. ramosa demonstrate that (±)-catechins do not influence growth of non-parasitized tomato plants and prevent heavy infestation by strongly reducing parasite attachments and inducing parasite necrosis once they are attached.
CONCLUSION This study points the potential use of (±)-catechins for parasitic weed control. It raises also the question of the mechanisms involved in the inhibition of prehaustorium formation and the necrosis of parasite attachments in response to (±)-catechins application. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Liens
- https://scijournals.onlinelibrary.wiley.com/doi/abs/10.1002/ps.8472
- doi:https://doi.org/10.1002/ps.8472
BibTeX (Download)
@article{https://doi.org/10.1002/ps.8472,
title = {(±)-Catechins inhibit prehaustorium formation in the parasitic weed Phelipanche ramosa and reduce tomato infestation},
author = {Christophe Veronesi and Estelle Billard and Philippe Delavault and Philippe Simier},
url = {https://scijournals.onlinelibrary.wiley.com/doi/abs/10.1002/ps.8472},
doi = {https://doi.org/10.1002/ps.8472},
year = {2025},
date = {2025-01-01},
urldate = {2025-01-01},
journal = {Pest Management Science},
volume = {81},
number = {2},
pages = {720-726},
publisher = {Wiley},
abstract = {BACKGROUND Phelipanche ramosa L. (Pomel) is a noxious parasitic weed in field and vegetable crops in Mediterranean countries. Control of this pest is complex and far from being achieved, and new environmentally-friendly strategies are being sought. The present study evaluates the possibility of using (±)-catechins as a natural herbicide against broomrapes.
RESULTS The results show that (±)-catechins have no effect on GR24-induced germination over a wide concentration range (10−4 to 10−10 m), nor on radicle elongation after germination, but strongly inhibit, at 10−4 and 10−5 m, prehaustorium formation in response to the haustorium-inducing factor, cis/trans-zeatin. Accordingly, pot experiments involving the supplies of 10−5 m of (±)-catechins to tomato plants infested or not with P. ramosa demonstrate that (±)-catechins do not influence growth of non-parasitized tomato plants and prevent heavy infestation by strongly reducing parasite attachments and inducing parasite necrosis once they are attached.
CONCLUSION This study points the potential use of (±)-catechins for parasitic weed control. It raises also the question of the mechanisms involved in the inhibition of prehaustorium formation and the necrosis of parasite attachments in response to (±)-catechins application. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.},
keywords = {allelopathy, biological control, haustorium, plant–plant interaction, team 4},
pubstate = {published},
tppubtype = {article}
}