Soil Mineral Composition and Salinity Are the Main Factors Regulating the Bacterial Community Associated with the Roots of Coastal Sand Dune Halophytes
Minh Thiet Vu,
Almando Geraldi,
Hoang Dang Khoa Do,
Arif Luqman,
Hoang Danh Nguyen,
Faiza Nur Fauzia,
Fahmi Ikhlasul Amalludin,
Aliffa Yusti Sadila,
Nabilla Hapsari Wijaya,
Heri Santoso,
Yosephine Sri Wulan Manuhara,
Le Minh Bui,
Sucipto Hariyanto,
Anjar Tri Wibowo
Affiliations
Minh Thiet Vu
NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City 70000, Vietnam
Almando Geraldi
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Hoang Dang Khoa Do
NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City 70000, Vietnam
Arif Luqman
Biology Department, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
Hoang Danh Nguyen
NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City 70000, Vietnam
Faiza Nur Fauzia
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Fahmi Ikhlasul Amalludin
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Aliffa Yusti Sadila
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Nabilla Hapsari Wijaya
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Heri Santoso
Generasi Biologi Indonesia (Genbinesia) Foundation, Gresik 61171, Indonesia
Yosephine Sri Wulan Manuhara
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Le Minh Bui
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Sucipto Hariyanto
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Anjar Tri Wibowo
Departement of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
Soil salinity and mineral deficiency are major problems in agriculture. Many studies have reported that plant-associated microbiota, particularly rhizosphere and root microbiota, play a crucial role in tolerance against salinity and mineral deficiency. Nevertheless, there are still many unknown parts of plant–microbe interaction, especially regarding their role in halophyte adaptation to coastal ecosystems. Here, we report the bacterial community associated with the roots of coastal sand dune halophytes Spinifex littoreus and Calotropis gigantea, and the soil properties that affect their composition. Strong correlations were observed between root bacterial diversity and soil mineral composition, especially with soil Calcium (Ca), Titanium (Ti), Cuprum (Cu), and Zinc (Zn) content. Soil Ti and Zn content showed a positive correlation with bacterial diversity, while soil Ca and Cu had a negative effect on bacterial diversity. A strong correlation was also found between the abundance of several bacterial species with soil salinity and mineral content, suggesting that some bacteria are responsive to changes in soil salinity and mineral content. Some of the identified bacteria, such as Bacillus idriensis and Kibdelosporangium aridum, are known to have growth-promoting effects on plants. Together, the findings of this work provided valuable information regarding bacterial communities associated with the roots of sand dune halophytes and their interactions with soil properties. Furthermore, we also identified several bacterial species that might be involved in tolerance against stresses. Further work will be focused on isolation and transplantation of these potential microbes, to validate their role in plant tolerance against stresses, not only in their native hosts but also in crops.
