Rhizobiome Signature and Its Alteration Due to Watering in the Wild Plant Moringa oleifera

Mohammed Y. Refai, Aala A. Abulfaraj, Israa J. Hakeem, Nehad A. Shaer, Mashael D. Alqahtani, Maryam M. Alomran, Nahaa M. Alotaibi, Hana S. Sonbol, Abdulrahman M. Alhashimi, Nouf S. Al-Abbas, Ruba A. Ashy, Sahar A. Alshareef and Rewaa S. Jalal ()
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Mohammed Y. Refai: Department of Biochemistry, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
Aala A. Abulfaraj: Biological Sciences Department, College of Science & Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Israa J. Hakeem: Department of Biochemistry, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
Nehad A. Shaer: Department of Chemistry, Al Lieth University College, Umm Al-Qura University, Makkah 21955, Saudi Arabia
Mashael D. Alqahtani: Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
Maryam M. Alomran: Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
Nahaa M. Alotaibi: Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
Hana S. Sonbol: Department of Biology, College of Sciences, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
Abdulrahman M. Alhashimi: Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
Nouf S. Al-Abbas: Department of Biology, Jamoum University College, Umm Al-Qura University, Makkah 21955, Saudi Arabia
Ruba A. Ashy: Department of Biology, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
Sahar A. Alshareef: Department of Biology, College of Science and Arts at Khulis, University of Jeddah, Jeddah 21921, Saudi Arabia
Rewaa S. Jalal: Department of Biology, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia

Sustainability, 2023, vol. 15, issue 3, 1-25

Abstract: Metagenomic approach was used to detect microbial gene abundance and relative abundance in the rhizosphere of Moringa oleifera and surrounding bulk soil and to detect the response of soil microbes to watering. Expectedly, the number and abundance of non-redundant genes were extremely higher in bacteria followed by archaea, eukaryota and viruses. Results demonstrated unexpected high abundance of some microbes (ex., endophyte genus Nocardioides ) in the rhizosphere that are supposed to exist mainly in other rhizocompartments. We suggest this differential distribution of microbes is due to the specific pattern of host-microbe interaction. Other endosymbiont microbes, ex., fungi Mucoromycota and Ascomycota, were highly abundant in the bulk soil possibly because they are phytopathogens where plant exudates might inhibit their growth or force these fungi to approach reverse chemotaxis. Our data indicated high abundance of other symbiont microbes in the rhizosphere of M. oleifera at phylum (ex., Actinobacteria) and genus (ex., Streptomyces ) levels. Watering experiment indicated that phylum Actinobacteria and the descending genus Streptomyces are among the highest. Rhizobiome of M. oleifera seems to harbor a wealth of new species of the genus Streptomyces that are required to be deciphered for function in order to be eventually utilized in pharmaceutical and agricultural applications.

Keywords: Actinobacteria; Streptomyces; rhizocompartment; phytopathogen; endophyte; symbiont; drought (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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