عنوان المقالة: Chetoui Olive Cultivar Rhizosphere: Potential Reservoir for Exoenzymes and Exopolysaccharides Producing Bacteria
بن عمر شبة | benamar cheba | 13180
نوع النشر
مقال علمي
المؤلفون بالعربي
بن عمر شبة و هاني عبد الظاهر
المؤلفون بالإنجليزي
Ben Amar Cheba Hani M. A. Abdelzaher
الملخص الانجليزي
Rhizospheric soils from cultivated olive (Olea europaea) trees of Chemlali, Chetoui, Quaissi, and Djalat cultivars were assessed for their bacterial abundance and diversity and were further screened for production of exopolysaccharides and exoenzymes (cellulase, chitinase, amylase, protease, lipase, and peroxidase). The results of the present study indicate that Chetoui cultivar revealed higher diversity, followed by Chemlali > Quaissi > Djalat, wherein, bacilli, enteric bacteria, and pseudomonads were abundantly present as specific bacterial groups associated with the Chetoui rhizosphere. Moreover, the exopolysaccharide (EPS)-producing bacteria of Chetoui cultivar (68.4%) presented the highest efficiency, followed by Djalat (23.5%) > Chemlali (7 %) > Quaissi (1%). These results revealed that the Chetoui cultivar presented highest enzyme activities, followed by Chemlali > Djalat > Quaissi, with a distinct abundance of peroxidase- and chitinase-producing bacteria, which may play a pivotal role in adapting olives to the environmental stresses. From this preliminary study, we confirmed that olive rhizosphere microbial diversity is essentially driven by the geographical origin and genotype of olive cultivars. Furthermore, we recommended the Chetoui olive cultivar rhizosphere as a potential reservoir for exoenzyme- and EPS-producing bacteria useful for future biotechnological applications.
تاريخ النشر
04/12/2020
الناشر
J Pure Appl Microbiol |
رقم المجلد
14
رقم العدد
4
رابط DOI
https://doi.org/10.22207/JPAM.14.4.32
رابط الملف
تحميل (0 مرات التحميل)
الكلمات المفتاحية
chetoui cultivar, Diversity, Exoenzymes, Exopolysaccharide-producing bacteria, Olea europaea, Rhizosphere
رجوع