Reactions of black bean seedlings and adult plants to infection by Fusarium oxysporum f. sp. phaseoli

2017 ◽  
Vol 96 ◽  
pp. 221-227 ◽  
Author(s):  
Marlon C. de Borba ◽  
Felipe R. Garcés-Fiallos ◽  
Marciel J. Stadnik
Keyword(s):  
Fusarium Oxysporum ◽  
Black Bean ◽  
Adult Plants

scholarly journals Rhizobium etli USDA9032 Engineered To Produce a Phenazine Antibiotic Inhibits the Growth of Fungal Pathogens but Is Impaired in Symbiotic Performance

2006 ◽  
Vol 73 (1) ◽  
pp. 327-330 ◽  
Author(s):  
Hari B. Krishnan ◽  
Beom Ryong Kang ◽  
Ammulu Hari Krishnan ◽  
Kil Yong Kim ◽  
Young Cheol Kim
Keyword(s):  
Fusarium Oxysporum ◽  
Botrytis Cinerea ◽  
Fungal Pathogens ◽  
Pseudomonas Chlororaphis ◽  
Rhizobium Etli ◽  
Black Bean ◽  
Phenazine Production

ABSTRACT Phenazine production was engineered in Rhizobium etli USDA9032 by the introduction of the phz locus of Pseudomonas chlororaphis O6. Phenazine-producing R. etli was able to inhibit the growth of Botrytis cinerea and Fusarium oxysporum in vitro. Black bean inoculated with phenazine-producing R. etli produced brownish Fix− nodules.

scholarly journals Coniferous Diseases In The Andijan Region

2020 ◽  
Vol 02 (12) ◽  
pp. 1-4
Author(s):  
Nodira Kamiljanovna Siddikova ◽  
◽  
Mukaddam Kamiljanovna Mirzaitova ◽  
Keyword(s):  
Fusarium Oxysporum ◽  
Frequency Of Occurrence ◽  
Verticillium Dahlia ◽  
Adult Plants

The article provides data on the composition of diseases of decorative coniferous crops in the Andizhan region. In total, 11 species of micromycetes were identified. In the nursery, during the lodging of seedlings, species of the river were noted. Fusarium: Fusarium oxysporum Schlecht. and F. solani (Mart.) Sacc., Verticillium dahlia Klebn. By the frequency of occurrence, Fusarium blight was noted much more often. Lodging of seedlings was also caused by Pythium debaryanum Hesse. Among the diseases of adult plants, we have identified - rust juniper (exc. - Gymnosporangium confusum Plowr.), defeat of needles (phomosis, rust), shoots and branches (diplodiosis, phomosis). drying of needles and juniper shoots and black needles (Hormiscium pinophilum (Nees.) Lind., Fumago vagans Pers.).

Registration of ‘Zorro’ Black Bean

2009 ◽  
Vol 3 (3) ◽  
pp. 226-230 ◽  
Author(s):  
James D. Kelly ◽  
Gregory V. Varner ◽  
Pat O'Boyle ◽  
Brian Long
Keyword(s):  
Black Bean

Cereals frost resistance correlates with an integral indicators of content of low-molecular-weight protective compounds and activity of antioxidant enzymes

2020 ◽  
Vol 2020 (3) ◽  
pp. 71-86
Author(s):  
O. I. Horielova ◽  
◽  
N. I. Ryabchun ◽  
M. A. Shkliarevskyi ◽  
A. M. Reznik ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Superoxide Dismutase ◽  
Antioxidant Enzymes ◽  
Antioxidant System ◽  
Frost Resistance ◽  
Low Molecular Weight ◽  
Guaiacol Peroxidase ◽  
Wheat Seedlings ◽  
Enzymatic Antioxidant ◽  
Adult Plants

Along with specific adaptive reactions, universal defense reactions, in particular activation of antioxidant system, are of great importance for plant survival under cold conditions. We have studied a relationship among the content of low-molecular-weight protective compounds with antioxidant properties (proline, soluble carbohydrates, flavonoids), the activity of antioxidant enzymes (superoxide dismutase, catalase, and guaiacol peroxidase) in seedlings of winter wheat, rye and triticale, and frost resistance of etiolated seedlings and adult plants at tillering stage. It was found that there was a fairly close correlation between the frost resistance of seedlings and adult cereal plants (r = 0,78). It was shown that a pronounced relationship between individual indicators of antioxidant system functioning in unhardened seedlings and their frost resistance was not found. After 6-day hardening of seedlings at 2-4°C, there was a high correlation between the total indicator of the enzymatic antioxidant system (the sum of normalized indicators of superoxide dismutase, peroxidase, and catalase activity) and their frost resistance (r = 0,86), but the correlation coefficient of this index with frost resistance of plants in tillering phase was significantly lower (r = 0,47). At the same time, a high correlation was found between the content of low-molecular-weight protectors in hardened seedlings and frost resistance of tillering adult plants (r = 0.89). The closest correlation was observed between the integral normalized indicator, comprising the sum of normalized values of antioxidant enzymes activity and the content of low-molecular-weight protectors in hardened seedlings, and frost resistance of seedlings (r = 0,94) and plants in tillering phase (r = 0,89). A presence of specific features in the functioning of antioxidant system during cold adaptation of cereal seedlings was established. Rye is characterized by a high content of low-molecular-weight protective compounds; at the same time, increased activity of antioxidant enzymes - superoxide dismutase and catalase - was noted in wheat seedlings. In triticale, depending on the genotype, the values of both enzymatic antioxidant activity and the content of low-molecular-weight protectors varied.

Uji Toksisitas Beberapa Fungisida Nabati terhadap Penyakit Layu Fusarium (Fusarium oxysporum) pada Tanaman Kentang (Solanum tuberosum L.) secara In Vitro (Toxicity Test of several Biofungicides in controlling Fusarium wilt (Fusarium oxysporum) in Potato Plants (Solanum tuberosum L.) by In Vitro)

2019 ◽  
Vol 9 (2) ◽  
pp. 91
Author(s):  
Ghea Dotulong ◽  
Stella Umboh ◽  
Johanis Pelealu
Keyword(s):  
Solanum Tuberosum ◽  
Fusarium Oxysporum ◽  
Fusarium Wilt ◽  
Leaf Extract ◽  
Solanum Tuberosum L ◽  
In Vitro Toxicity ◽  
Potato Plants ◽  
Colony Diameter ◽  
In Vitro Toxicity Test

Uji Toksisitas Beberapa Fungisida Nabati terhadap Penyakit Layu Fusarium (Fusarium oxysporum) pada Tanaman Kentang (Solanum tuberosum L.) secara In Vitro (Toxicity Test of several Biofungicides in controlling Fusarium wilt (Fusarium oxysporum) in Potato Plants (Solanum tuberosum L.) by In Vitro) Ghea Dotulong1*), Stella Umboh1), Johanis Pelealu1), 1) Program Studi Biologi, FMIPA Universitas Sam Ratulangi, Manado 95115*Email korespondensi: [email protected] Diterima 9 Juli 2019, diterima untuk dipublikasi 10 Agustus 2019 Abstrak Tanaman kentang (Solanum tuberosum L.) adalah salah satu tanaman hortikultura yang sering mengalami penurunan dari segi produksi dan produktivitasnya, akibat adanya serangan penyakit layu yang salah satunya disebabkan oleh Fusarium oxysporum. Tujuan penelitian ini adalah mengidentifikasi toksisitas beberapa fungisida nabati dalam mengendalikan penyakit Layu Fusarium (F. oxysporum) pada tanaman kentang (Solanum tuberosum L.) secara In Vitro. Metode Penelitian yang digunakan yaitu metode umpan beracun. Data dianalisis dengan Rancangan Acak Lengkap (RAL) dengan Analisis Varian (ANAVA) yang dilanjutkan dengan menggunakan metode BNT (Beda Nyata Terkecil). Hasil Penelitian, diperoleh nilai toksisitas fungisida nabati tertinggi yaitu pada ekstrak daun sirsak dengan nilai HR (69,44%), kategori berpengaruh, ditandai dengan diameter koloni 2,75 cm (100ppm) dan yang terendah toksisitasnya yaitu pada ekstrak daun jeruk purut dengan nilai HR (49,81%), kategori cukup berpengaruh ditandai dengan diameter koloni 3,75 cm (25ppm). Semakin tinggi konsentrasi yang diujikan maka semakin tinggi toksisitas dari fungisida nabati yang diberikan.Kata Kunci: fungisida nabati, Fusarium oxysporum, tanaman kentang, In Vitro Abstract Potato plants (Solanum tuberosum L.) is one of the horticulture plants which often decreases in terms of production and productivity, due to the attack of wilt, one of which is caused by Fusarium oxysporum. The purpose of this study was to determine the toxicity of several biofungicides in controlling Fusarium wilt (F. oxysporum) in potato plants (Solanum tuberosum L.) in Vitro. The research method used was the In Vitro method with the poison bait method. Data were analyzed by Completely Randomized Design with Variant Analysis (ANAVA), followed by the BNT method. The results showed that the highest biofungicide toxicity value was soursop leaf extract with HR values (69.44%), influential categories, characterized by colony diameter 2.75 cm (100ppm) and the lowest toxicity, namely in kaffir lime leaf extract with a value of HR (49.81%), quite influential category was characterized by colony diameter of 3.75 cm (25ppm). The higher the concentration tested, the higher the toxicity of the biofungicide given.Keywords: biofungicides, Fusarium oxysporum, Potato Plants, In Vitro.

Inhabitation of Antagonistic Bacterium B96-II to Fusarium oxysporum f. sp. asparagi*

2010 ◽  
Vol 2009 (6) ◽  
pp. 861-865 ◽  
Author(s):  
Liping MA ◽  
Bianqing HAO ◽  
Jing WANG ◽  
Shu QIN ◽  
Xiongwu QIAO
Keyword(s):  
Fusarium Oxysporum ◽  
Antagonistic Bacterium
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