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Ecology of Indigenous Plants in Abandoned Agricultural Areas in Tabuk Region, Saudi Arabia

Open Journal of Ecology 2022年第2期12卷 162-174页

作者： nadi awad al-harbi Biology Department University College of Tayma Tabuk University Tabuk Saudi Arabia

Due to drought, low soil fertility, little rain fall, elevated levels of evapotranspiration, salinization of the soil and a lack of ground water, the problem of desertion of agricultural areas has developed in KSA in recent years (e.g. Tabuk region). In the Saudi Arabia, agricultural land abandonment’s negative impact on the composition of perennial vegetation, soil quality, and the structure of population was investigated. In the several abandoned fields of the research region, eleven species of perennial plants pertaining to nine families, eleven genera were found. Following the use of the ordination of detrended correspondence analysis (DCA), four plant communities were found. Zygophyllum hamiense, Prosopis farcta, Seidlitzia rosmarinus, Traganum nudatum. The indicators were Pulicaria undulate, Calligonum comosum. Populations of Calligonum comosum and Zygophyllum hamiense were found to be either negatively skewed or inversely J-shaped, indicating fast-growing populations with strong reproductive potential, according to demographic research. Traganum nudatum, Prosopis farcta and S. Rosmarinus, on the other hand, have a nearly symmetrical size-frequency distribution (like a bell in shape). The current research highlights the importance of managing deserted agricultural fields in order to restore and improve range lands having adapted native plants to regional conditions like little water demand.

关键词： Halophytes Succulent Ecology Deserted Lands

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Application of Plant Growth-Promoting Bacteria as an Eco-Friendly Strategy for Mitigating the Harmful Effects of Abiotic Stress on Plants

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Phyton-International Journal of Experimental Botany 2023年第12期92卷 3305-3321页

作者： Ahmed Hassan Abdou Omar Abdullah alkhateeb Hossam Eldin Hamed Mansour Hesham S.Ghazzawy Muayad Saud albadrani nadi awad al-harbi Wasimah B.al-Shammari Khaled Abdelaal Social Studies Department College of ArtsKing Faisal UniversityAl-Ahsa31982Saudi Arabia Department of Agribusiness and Consumer Sciences College of Agriculture&Food SciencesKing Faisal UniversityAl-Ahsa31982Saudi Arabia Agribusiness and Consumer Sciences Department College of Agricultural and Food SciencesKing Faisal UniversityAl-Ahsa31982Saudi Arabia Date Palm Research Center of Excellence King Faisal UniversityAl-Ahsa31982Saudi Arabia Department of Family and Community Medicine College of MedicineTaibah UniversityAl-Madinah Al-Munawara42353Saudi Arabia Biology Department University College of TaymaUniversity of TabukTabukSaudi Arabia Department of Biology College of ScienceUniversity of HailP.O.Box 2440Hail55476Saudi Arabia EPCRS Excellence Center Plant Pathology and Biotechnology LaboratoryAgricultural Botany DepartmentFaculty of AgricultureKafrelsheikh University33516Egypt

Plant growth-promoting bacteria(PGPB)play an important role in improving agricultural production under several abiotic stress *** can be used to increase crop growth and development through hormonal balance and increase nutrient *** positive effect of PGPB may be due to its pivotal role in morphophysiological and biochemical characteristics like leaf number,leaf area,and stem ***,relative water content,chlorophyll content,carotenoids,antioxidant enzymes,and plant hormones were improved with PGPB *** yield and yield components were also increased with PGPB treatment in numerous *** anatomical structure of plant organs was increased such as lamina thickness,stem diameter,xylem vessel diameter,and number of xylem vessels as well as phloem thickness under treatment with ***,PGPB can alleviate the negative effects of several abiotic stresses by regulating the antioxidant defense system to scavenge the reactive oxygen species resulting in an improvement of yield production in the stressed ***,gene expressions were controlled by calcium ion modulation during secondary messengers that act upon calcium-dependent protein kinase and protein *** includes many transcription factors such as MYB,AP2/ERF,bZIP,and NAC which regulate genes related to salinity stress *** can demonstrate induction genes of signaling under abiotic stress *** review gives an outline of the PGPB role in alleviating the harmful effects of abiotic factors such as salinity,drought,and heat associated with the improvement of the morpho-physiological and biochemical features especially,leaves and branches number,leaf area,antioxidant compounds,plant hormones,and relative water content.

关键词： PGPB salinity drought heat reactive oxygen species antioxidants gene expressions

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