Phenolic compounds levels in mint (mentha spicata)‎ leaves : effects of different abiotic factors and type of signals triggering

العناوين الأخرى

مستوى مركبات الفينول في نبات النعنع الورقي و تأثير مختلف العوامل الحيوية و الشارات التحفيزية

مقدم أطروحة جامعية

al-Khasabah, Ibrahim Ahmad

مشرف أطروحة جامعية

al-Shurafa, Khalid Yusuf Ahmad

أعضاء اللجنة

Mustafa, Ahmad Husayn
Khulayfat, Khalid Muhammad
al-Laymun, Muhammad Awdah

الجامعة

جامعة مؤتة

الكلية

كلية العلوم

القسم الأكاديمي

قسم الأحياء

دولة الجامعة

الأردن

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2016

الملخص الإنجليزي

Mentha spicata plants were subjected to different biotic stresses in order to evaluate the phenolic compounds leaves levels and the types of signals triggering.

Total phenolic compounds levels exhibited specific response to a particular abiotic stress factor which were fast respond to drought exposure, light intensity (10, 100 and 1000µE), with slight change in response to salt stress (100mM NaCl) and for heat stress (4 and 30˚C).

A parallel change was with elevation in H2O2 contents which considered the main signal molecule to enhance plant tolerance for different stresses.

Indeed, the change in anthocyanins and carotenoids contents in response to drought, different light intensities, salinity and temperature stress was encounter with change in H2O2 contents in particular for long term of exposure.

MDA level was also exhibited the changing depending on the levels of oxidant and antioxidant a availability during a particular abiotic stress factors. This risk was a accomplished by the regulation of PAL activity which was found to be increased during the stress period as the severity of stress become more serious. Chl contents were also used to explore this imbalance caused by each abiotic factor.

Prolonged exposure showed reduction in Chl contents in particular when exposed to light intensity.

Higher anthocyanins, carotenoids, H2O2 and total phenolic compounds levels were expressed the plasticity of plant acclimation at different levels. Tolerance of abiotic stress factors apparently is closely associated with the non-enzymatic antioxidant system via metabolome readjustment.

The study suggests that, the biosynthesis of these compounds is tightly regulated, reflect plant plasticity for acclimation to different abiotic stress.

التخصصات الرئيسية

الأحياء

عدد الصفحات

65

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-726120