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Influence of Temperature, pH, Light, and Media in The Growth of Colletotrichum gloeosporioides Causing Anthracnose Disease of Citrus Fruits

تأثير درجة الحرارة، pH، الإضاءة، و المستنبتات في نمو Colletotrichum gloeosporioides المسبب لمرض الأنثراكنوز في ثمار الحمضيات

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 Publication date 2013
and research's language is العربية
 Created by Shamra Editor




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Effect of different degrees of temperature, different levels of pH , different periods of light and four media (PDA, OMA, MEA, CzA) was studied in vitro against the growth of C. gloeosporioides causing anthracnose disease of citrus fruits. The results indicated that the growth of fungus was maximum at temperature 30°C and at pH = (5.5,6,6.5), and Light was unnecessary for the growth of C. gloeosporioides. Among the different media tested PDA and OMA supported the maximum growth of fungus.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة تأثير درجات الحرارة المختلفة، مستويات pH، فترات الإضاءة المختلفة، وأربعة مستنبتات غذائية (PDA، OMA، MEA، CzA) على نمو الفطر Colletotrichum gloeosporioides المسبب لمرض الأنثراكنوز في ثمار الحمضيات. أظهرت النتائج أن الفطر ينمو بشكل أمثل عند درجة حرارة 30°م ومستويات pH بين 5.5 و6.5، وأن الإضاءة ليست ضرورية لنمو الفطر. من بين المستنبتات المختبرة، أظهرت مستنبتات OMA وPDA أفضل نمو للفطر. تم جمع العينات من ثمار الليمون الحامض المصابة بمرض الأنثراكنوز من قرية ناحوت في محافظة طرطوس، وتمت دراسة تأثير العوامل البيئية المختلفة على نمو الفطر في المختبر. أظهرت الدراسة أن الفطر ينمو بشكل أمثل في درجة حرارة 30°م ومستويات pH بين 5.5 و6.5، وأن الإضاءة ليست ضرورية لنمو الفطر. من بين المستنبتات المختبرة، أظهرت مستنبتات OMA وPDA أفضل نمو للفطر. توصي الدراسة بإجراء المزيد من الأبحاث لدراسة تأثير مستنبتات غذائية ودرجات حرارة إضافية على نمو الفطر، وكذلك دراسة تأثير الشروط البيئية على تبوغ الفطر.
Critical review
دراسة نقدية: تقدم هذه الدراسة معلومات قيمة حول تأثير العوامل البيئية المختلفة على نمو الفطر Colletotrichum gloeosporioides، وهو مسبب رئيسي لمرض الأنثراكنوز في ثمار الحمضيات. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من المفيد تضمين المزيد من التفاصيل حول كيفية تأثير هذه العوامل على تبوغ الفطر وليس فقط نموه. ثانياً، كان من الممكن توسيع نطاق الدراسة ليشمل عوامل بيئية أخرى مثل الرطوبة النسبية وتأثيرها على نمو الفطر. ثالثاً، كان من الممكن استخدام تقنيات تحليلية أكثر تقدماً مثل التحليل الجزيئي لفهم أفضل للآليات التي تؤثر على نمو الفطر. على الرغم من هذه النقاط، فإن الدراسة تقدم أساساً جيداً لفهم تأثير العوامل البيئية على نمو الفطر وتفتح الباب لمزيد من الأبحاث في هذا المجال.
Questions related to the research
  1. ما هي درجة الحرارة المثلى لنمو الفطر Colletotrichum gloeosporioides؟

    درجة الحرارة المثلى لنمو الفطر هي 30°م.

  2. هل الإضاءة ضرورية لنمو الفطر Colletotrichum gloeosporioides؟

    لا، الإضاءة ليست ضرورية لنمو الفطر.

  3. ما هي أفضل المستنبتات الغذائية لنمو الفطر Colletotrichum gloeosporioides؟

    أفضل المستنبتات الغذائية لنمو الفطر هي OMA وPDA.

  4. ما هي مستويات pH المثلى لنمو الفطر Colletotrichum gloeosporioides؟

    مستويات pH المثلى لنمو الفطر تتراوح بين 5.5 و6.5.


References used
ADASKAVEG, J.E., and HARTIN, R.J. Characterization of Colletotrichum acutatum isolates causing anthracnose of almond and peach in California. Phytopathology, 87 , 1997, 979-987
AFANADOR -KAFURI, L., MINZ, D., MAYMON, M. and FREEMAN, S. Characterization of Colletotrichum isolates from tamarillo, passiflora, and mango in Colombia and identification of a unique species from the genus. Phytopathology, 93, 2003, 579-587
AGOSTINI, J.P., TIMMER, L.W. and MITCHELL, D.J. Morphological and pathological characteristics of strains of Colletotrichum gloeosporioides from citrus. Phytopathology,82, 1992, 1377-1382
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