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Endophytic Fungi of Salt-Tolerant Plants: Diversity and Ability to Promote Plant Growth
- Source :
- Journal of microbiology and biotechnology. 31(11)
- Publication Year :
- 2021
-
Abstract
- Suaeda australis, Phragmites australis, Suaeda maritima, Suaeda glauca Bunge, and Limonium tetragonum in the Seocheon salt marsh on the west coast of the Korean Penincula were sampled in order to identify the endophytes inhabiting the roots. A total of 128 endophytic fungal isolates belonging to 31 different genera were identified using the fungal internal transcribed spacer (ITS) regions and the 5.8S ribosomal RNA gene. Fusarium, Paraconiothyrium and Alternaria were the most commonly isolated genera in the plant root samples. Various diversity indicators were used to assess the diversity of the isolated fungi. Pure cultures containing each of the 128 endophytic fungi, respectively, were tested for the plant growth-promoting abilities of the fungus on Waito-C rice germinals. The culture filtrate of the isolate Lt-1-3-3 significantly increased the growth of shoots compared to the shoots treated with the control. Lt-1-3-3 culture filtrate was analyzed and showed the presence of gibberellins (GA1 2.487 ng/ml, GA3 2.592 ng/ml, GA9 3.998, and GA24 6.191 ng/ml). The culture filtrate from the Lt-1-3-3 fungal isolate produced greater amounts of GA9 and GA24 than the wild-type Gibberella fujikuroi, a fungus known to produce large amounts of gibberellins. By the molecular analysis, fungal isolate Lt-1-3-3 was identified as Gibberella intermedia, with 100% similarity.
- Subjects :
- Fusarium
Plant Development
Fungus
Applied Microbiology and Biotechnology
Plant Roots
Plant use of endophytic fungi in defense
Suaeda australis
Suaeda maritima
Ascomycota
Botany
DNA, Ribosomal Spacer
Republic of Korea
Endophytes
DNA, Fungal
biology
fungi
food and beverages
Alternaria
Oryza
Salt-Tolerant Plants
General Medicine
biology.organism_classification
Gibberellins
RNA, Ribosomal, 5.8S
Wetlands
Gibberella
Gibberella fujikuroi
Biotechnology
Subjects
Details
- ISSN :
- 17388872
- Volume :
- 31
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- Journal of microbiology and biotechnology
- Accession number :
- edsair.doi.dedup.....481f1c76476ba2bc951616072c6bea89