Tunisian isolates ofTrichodermaspp. andBacillus subtiliscan controlBotrytis fabaeon faba bean

Mbazia, Ahlem; Youssef, Noura Omri Ben; Kharrat, Mohamed

doi:10.1080/09583157.2016.1168775

Cited by 12 publications

(6 citation statements)

References 24 publications

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“…In addition, procymidone is very effective against B. fabae ( Marcellos et al, 1995 ), and chocolate spot severity in faba bean is reduced by frequent application of mancozeb ( Sahile et al, 2008 ), intercropping with cereals such as barley, oat, triticale, and wheat ( Sahile et al, 2008 ; Fernández-Aparicio et al, 2011 ), and low crop density and wide row spacing ( Davidson et al, 2007 ). In a recent study, Mbazia et al (2016) also observe that isolates of Trichoderma viride , T. harzianum , and Bacillus subtilis reduced chocolate spot severity in faba bean. A key option in the integrated management of B. fabae is the cultivation of resistant cultivars.…”

Section: Agronomymentioning

confidence: 80%

Faba Bean Cultivation – Revealing Novel Managing Practices for More Sustainable and Competitive European Cropping Systems

et al. 2018

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Faba beans are highly nutritious because of their high protein content: they are a good source of mineral nutrients, vitamins, and numerous bioactive compounds. Equally important is the contribution of faba bean in maintaining the sustainability of agricultural systems, as it is highly efficient in the symbiotic fixation of atmospheric nitrogen. This article provides an overview of factors influencing faba bean yield and quality, and addresses the main biotic and abiotic constraints. It also reviews the factors relating to the availability of genetic material and the agronomic features of faba bean production that contribute to high yield and the improvement of European cropping systems. Emphasis is to the importance of using new high-yielding cultivars that are characterized by a high protein content, low antinutritional compound content, and resistance to biotic and abiotic stresses. New cultivars should combine several of these characteristics if an increased and more stable production of faba bean in specific agroecological zones is to be achieved. Considering that climate change is also gradually affecting many European regions, it is imperative to breed elite cultivars that feature a higher abiotic–biotic stress resistance and nutritional value than currently used cultivars. Improved agronomical practices for faba bean crops, such as crop establishment and plant density, fertilization and irrigation regime, weed, pest and disease management, harvesting time, and harvesting practices are also addressed, since they play a crucial role in both the production and quality of faba bean.

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Section: Agronomymentioning

confidence: 80%

Faba Bean Cultivation – Revealing Novel Managing Practices for More Sustainable and Competitive European Cropping Systems

et al. 2018

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“…Some Trichoderma strains were isolated from Tunisian soil and plant habitats. Their characterization was based on evaluating their occurrence and diversity within contrasting bioclimatic zones [ 93 , 94 ] or on their PGP and/or BCA abilities on perennial ( T. harzianum on Olive trees [ 32 ]) or annual crops (e.g., T. harzianum and T. viride on Potatoes [ 95 ] and Faba bean [ 96 ]; and Trichoderma spp. on wheat [ 33 , 34 ]).…”

Section: Resultsmentioning

confidence: 99%

Assessment of Tunisian Trichoderma Isolates on Wheat Seed Germination, Seedling Growth and Fusarium Seedling Blight Suppression

et al. 2023

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Beneficial microorganisms, including members of the Trichoderma genus, are known for their ability to promote plant growth and disease resistance, as well as being alternatives to synthetic inputs in agriculture. In this study, 111 Trichoderma strains were isolated from the rhizospheric soil of Florence Aurore, an ancient wheat variety that was cultivated in an organic farming system in Tunisia. A preliminary ITS analysis allowed us to cluster these 111 isolates into three main groups, T. harzianum (74 isolates), T. lixii (16 isolates) and T. sp. (21 isolates), represented by six different species. Their multi-locus analysis (tef1, translation elongation factor 1; rpb2, RNA polymerase B) identified three T. afroharzianum, one T. lixii, one T. atrobrunneum and one T. lentinulae species. These six new strains were selected to determine their suitability as plant growth promoters (PGP) and biocontrol agents (BCA) against Fusarium seedling blight disease (FSB) in wheat caused by Fusarium culmorum. All of the strains exhibited PGP abilities correlated to ammonia and indole-like compound production. In terms of biocontrol activity, all of the strains inhibited the development of F. culmorum in vitro, which is linked to the production of lytic enzymes, as well as diffusible and volatile organic compounds. An in planta assay was carried out on the seeds of a Tunisian modern wheat variety (Khiar) by coating them with Trichoderma. A significant increase in biomass was observed, which is associated with increased chlorophyll and nitrogen. An FSB bioprotective effect was confirmed for all strains (with Th01 being the most effective) by suppressing morbid symptoms in germinated seeds and seedlings, as well as by limiting F. culmorum aggressiveness on overall plant growth. Plant transcriptome analysis revealed that the isolates triggered several SA- and JA-dependent defense-encoding genes involved in F. culmorum resistance in the roots and leaves of three-week-old seedlings. This finding makes these strains very promising in promoting growth and controlling FSB disease in modern wheat varieties.

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“…Additionally, a 24 hour prior to inoculating with B. fabae, spraying faba bean plants with either of the Trichoderma spp. or Bio Zeid as a biofungicide signi cantly reduced the severity of the disease after 14 days in the range of 3.0-4% compared to the control (8.7%) in greenhouse conditions (Barakat et al, 2013;Mbazia et al,2016).…”

Section: Introductionmentioning

confidence: 99%

Management of chocolate spot disease in faba bean plants by using biological control means

Ahmed,

Salem,

Mahmoud

et al. 2023

Preprint

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This study was conducted in Nubaria city, EL-Behira Governorate, Egypt, during two winter growing seasons (2021/22 and 2022/23) to estimate the efficiency of different antagonists — Trichoderma album, T. atrovirde, T. hamatum and T. harzianum (30x106 spore/ml), as well as with the two commercial biocide products, including Blight Stop and Bio Zeid in controlling chocolate spot of bean plants on a naturally infected farm that has a history of high infection with the fungus Botrytis fabae, which causes brown spot disease which causes a decrease in productivity. In vitro, T. atroviride significantly caused the highest reduction of mycelial growth being 90.00 % followed by T. harzianum (86.67 %) and T. T. album (83.89%) on the average. In vivo, all tested antagonists significantly reduced disease incidence and severity of Botrytis fabae in both seasons 2021/22 and 2022/23. T. atroviride showed the highest efficacy bioagent (73.55 and 85.15%) followed by T. harzianum (72.55 and 81.22%) in controlling B. fabae of faba bean plants during two seasons 2021/22 and 2022/23, respectively. In addition, the results also showed that all tested bio-inducer treatments had an impact on yield components and increased levels of chlorophyll, protein%, phenols, flavonoids, peroxidase (PO), polyphenoloxidase (PPO), chitinase, and -1, 3-glucanase activities compared to control treatment in both seasons. In this regard, Spraying T. atroviride showed the highest efficacy bioagent followed by T. harzianum. On the other hand, T. hamatum showed the lowest efficacy in comparison with control treatment during the two growing seasons.

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Tunisian isolates ofTrichodermaspp. andBacillus subtiliscan controlBotrytis fabaeon faba bean

Cited by 12 publications

References 24 publications

Faba Bean Cultivation – Revealing Novel Managing Practices for More Sustainable and Competitive European Cropping Systems

Faba Bean Cultivation – Revealing Novel Managing Practices for More Sustainable and Competitive European Cropping Systems

Assessment of Tunisian Trichoderma Isolates on Wheat Seed Germination, Seedling Growth and Fusarium Seedling Blight Suppression

Management of chocolate spot disease in faba bean plants by using biological control means

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