نتایج جستجو برای: bipolaris maydis

تعداد نتایج: 1775  

ژورنال: :به نژادی نهال و بذر 0
مجید زمانی m. zamani seed and plant improvement institute,ؤسسه تحقیقات اصلاح و تهیه نهال و بذر فهمیده مهریان f. mehriyan fungal diseases research deparment, plant pests and diseases research institute, p. o. box 1454, tehran 19395, iran.بخش تحقیقات بیماری های قارچی، مؤسسه تحقیقات آفات و بیماری های گیاهی، صندوق پستی 1454، تهران 19395

به منظور تعیین واکنش تعدادی از ارقام و لاین های برگزیده ذرت نسبت به بیماری لکه برگی، هفده لاین و رقم ذرت در قالب طرح بلوک های کامل تصادفی با دو تکرار در سال 1378 و چهار تکرار در سال 1379 در ایستگاه قراخیل ساری در شرایط مزرعه مورد ارزیابی قرار گرفتند. در این بررسی تک تک بوته ها در دو مرحله 4-3 برگی با سوسپانسیون اسپور قارچ عامل بیماری (bipolaris maydis) به غلظت spore/ml 4 10 × 3 با سرنگ به میزان...

2017
T. W. BISCHOFF

Isolates of Bipolaris maydis race T, mating types A and a, and Bipolaris maydis race O, mating types A and a, were compared for ammonium production at two or 10 g/l glucose on a L-asparagine-mineral salts medium in relation to mycelium dry weight, sporulation and pH of the culture medium at six, 10 and 14 d of incubation. Ammonium was detected in all media for all isolates at six days and level...

Journal: رستنیها 2014
Abdollah Ahmadpour Adel Pordel M. Zhang Mohammad Javan-Nikkhah, Sadi Karami Seyyed Mostafa Jabbarifar T. Tsukiboshi Zeinab Heidarian

In the present study, four species of Bipolaris viz. B. salkadehensis, B. coicis, B. ellisii, and B. maydis and two species of Curvularia viz. C. tuberculata and C. comoriensis were isolated and identified from different poaceousspecies. Bipolaris coicis on Coix lacryma-jobi, B. ellisii on Zea mays, C. tuberculata on Oryza sativa, Sorghum bicolor, Cyperus rotundus and C. comoriensis on Oryza sa...

Journal: :Frontiers in fungal biology 2022

The filamentous ascomycete Bipolaris maydis is a plant pathogen that causes corn leaf blight and has been used in cytological studies of sexual reproduction. In this fungus, when null mutants each septin are crossed with the wild-type strain, all ascospores derived from same asci show abnormal morphology. phenomenon was remarkably similar to event known as “ascus dominance” Neurospora crassa , ...

2015
Yumei Dong Yuan Su Ping Yu Min Yang Shusheng Zhu Xinyue Mei Xiahong He Manhua Pan Youyong Zhu Chengyun Li Wei Wang

Nonhost resistance (NHR) pertains to the most common form of plant resistance against pathogenic microorganisms of other species. Bipolaris maydis is a non-adapted pathogen affecting soybeans, particularly of maize/soybean intercropping systems. However, no experimental evidence has described the immune response of soybeans against B. maydis. To elucidate the molecular mechanism underlying NHR ...

2003
RITA C. B. WEIKERT-OLIVEIRA M. APARECIDA DE RESENDE HENRIQUE M. VALÉRIO RACHEL B. CALIGIORNE EDILSON PAIVA Maria Aparecida de Resende

Vinte amostras de espécies de fungos, agentes da helmintosporiose em cereais, foram obtidas de diferentes regiões geográficas, sendo nove constituídas de Bipolaris oryzae, isoladas de cultura do arroz (Oryza sativa), sete de B. sorokiniana coletadas de trigo (Triticum aestivum), duas de B. maydis e duas de Exserohilum turcicum provenientes de milho (Zea mays). As amostras foram analisadas atrav...

2015
Xupo Ding Min Yang Huichuan Huang Youcong Chuan Xiahong He Chengyun Li Youyong Zhu Shusheng Zhu

Plant disease can be effectively suppressed in intercropping systems. Our previous study demonstrated that neighboring maize plants can restrict the spread of soil-borne pathogens of pepper plants by secreting defense compounds into the soil. However, whether maize plant can receive benefits from its neighboring pepper plants in an intercropping system is little attention. We examined the effec...

Journal: :Indian Journal of Agricultural Sciences 2022

Maydis leaf blight (MLB) incited by Bipolaris maydis occurs in most of the maize growing regions. Present study revealed morphological divergence among 74 isolates B. collected from geographically distant places India. Based on morpho-cultural features clustered R software, 25 representative were used for race identification. The internal transcribed spacer (ITS) sequence further confirmed as m...

ژورنال: :رستنیها 2014
عبداله احمدپور زینب حیدریان سعدی کرمی عادل پردل سید مصطفی جباری فر

در این مطالعه، چهار گونه از جنس bipolaris شامل b. salkadehensis، b. coicis، b. ellisii، b. maydis و دو گونه از جنس curvularia شامل: curvularia tuberculata و c. comoriensis روی گیاهان گرامینه شناسایی شدند. گونه های b. coicis (روی coix lacryma-jobi)، b. ellisii (روی zea mays)، curvularia tuberculata (روی oryza sativa، sorghum bicolor و cyperus rotundus) و c. comoriensis (روی oryza sativa) گونه­ها...

Journal: :Plant physiology 1985
R R Klein D E Koeppe

Bipolaris maydis race T toxin (BmT), and its functional analog, methomyl, uncoupled Texas male-sterile (T) cytoplasm mitochondria by decreasing the resistance of the inner membrane to protons. However, unlike protonophoric or ionophoric agents, BmT toxin and methomyl induced irreversible swelling. Packed volume measurements showed that mitochondrial volume was irreversibly increased by methomyl...

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