Chlorophyll content and chlorophyll fluorescence as physiological parameters for monitoringOrobanche foetidaPoir. infestation on faba bean (Vicia fabaL.)

Abstract

In total, 39 faba bean ( Vicia faba L.) advanced lines were evaluated for resistance to broomrape Orobanche foetida under highly infested field conditions. The trials were conducted during two consecutive copping seasons at Oued-Beja Research Station in Tunisia. The advanced lines XAR-VF00.13-1-2-1-2-1 and XBJ90.04-2-3-1-1-1-2A expressed high resistance level to O. foetida exceeding those recorded for resistance checks Najeh and Baraca. Results showed that O. foetida significantly affected the biomass, grain yield, chlorophyll content index (CCI) and the maximum quantum efficiency (F v /F m ratio). No significant effect of O. foetida parasitism was observed on host plant water content (WC). O. foetida parasitism significantly affected both CCI and F v /F m ratio. CCI decreases varied from 46.4% for the susceptible check Badi and 4.2% and 9.3% observed for the genotypes Baraca and XBJ90.04-2-3-1-1-1-2A. Compared to susceptible check, slight decreases of F v /F m ratio were observed for both advanced lines XBJ90.04-2-3-1-1-1-2A and XAR-VF00.13-1-2-1-2-1. Correlation between CCI and F v /F m with the resistance to broomrape makes this, easy-to-measure, parameter very useful as a practical screening tool for early parasitism detection, diagnosis and identification and selection of high resistant plants against this pathogen.

Global changes in gene expression during compatible and incompatible interactions of faba bean (Vicia faba L.) during Orobanche foetida parasitism

“…In this study, we used two faba bean varieties released by the Tunisian breeding program: the variety 'Badii' (S_Host) widely grown in the main faba bean cropping areas in Tunisia and known for its high susceptibility to O.foetida, thus it is largely used as a susceptible check; and the resistant variety 'Chourouk' (R_Host) recently released to better face O. foetida attack in the high infested fields [17]. The resistance of the 'Chourouk' variety is evident through the absence of O. foetida seed germination.…”

“…The broomrape infestation in many countries that exploit food legumes has forced them to become importers of their agricultural products to satisfy local demand. In Tunisia, in heavily infested fields, yield losses may reach 90% [16,17], and the recent estimation of the infested area is around 80,000 [18].…”

Unlocking the hepatoprotective potential of the parasitic plant Orobanche foetida Poir. aqueous extract against CCl4-induced liver injury in rat

“…Orobanche foetida, very distinct by its vibrant red color and fetid smell, is a root parasite known to be one of the most devastating species in the Mediterranean region (Abbes et al, 2010). In Tunisia, this species poses a growing challenge for various leguminous plant fields (Amri et al, 2019;Amri et al, 2021). Its presence and large spreading into farmers' fields has been reported as an emerging issue affecting these crops (Nefzi et al, 2016;Trabelsi et al, 2016;Abbes et al, 2020).…”