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Elbakary M, Hammad SF, Youseif SH, Soliman HSM. Revealing the diversity of Jojoba-associated fungi using amplicon metagenome approach and assessing the in vitro biocontrol activity of its cultivable community. World J Microbiol Biotechnol 2024; 40:205. [PMID: 38755302 DOI: 10.1007/s11274-024-03986-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/13/2024] [Indexed: 05/18/2024]
Abstract
Jojoba shrubs are wild plants cultivated in arid and semiarid lands and characterized by tolerance to drought, salinity, and high temperatures. Fungi associated with such plants may be attributed to the tolerance of host plants against biotic stress in addition to the promotion of plant growth. Previous studies showed the importance of jojoba as jojoba oil in the agricultural field; however, no prior study discussed the role of jojoba-associated fungi (JAF) in reflecting plant health and the possibility of using JAF in biocontrol. Here, the culture-independent and culture-dependent approaches were performed to study the diversity of the jojoba-associated fungi. Then, the cultivable fungi were evaluated for in-vitro antagonistic activity and in vitro plant growth promotion assays. The metagenome analysis revealed the existence of four fungal phyla: Ascomycota, Aphelidiomycota, Basidiomycota, and Mortierellomycota. The phylum Ascomycota was the most common and had the highest relative abundance in soil, root, branch, and fruit samples (59.7%, 50.7%, 49.8%, and 52.4%, respectively). Alternaria was the most abundant genus in aboveground tissues: branch (43.7%) and fruit (32.1%), while the genus Discosia had the highest abundance in the underground samples: soil (24%) and root (30.7%). For the culture-dependent method, a total of 14 fungi were isolated, identified, and screened for their chitinolytic and antagonist activity against three phytopathogenic fungi (Fusarium oxysporum, Alternaria alternata and Rhizoctonia solani) as well as their in vitro plant growth promotion (PGP) activity. Based on ITS sequence analysis, the selected potent isolates were identified as Aspergillus stellatusEJ-JFF3, Aspergillus flavus EJ-JFF4, Stilbocrea sp. EJ-JLF1, Fusarium solani EJ-JRF3, and Amesia atrobrunneaEJ-JSF4. The endophyte strain A. flavus EJ-JFF4 exhibited the highest chitinolytic activity (9 Enzyme Index) and antagonistic potential against Fusarium oxysporum, Alternaria alternata, and Rhizoctonia solani phytopathogens with inhibitory percentages of 72, 70, and 80 respectively. Also, A. flavus EJ-JFF4 had significant multiple PGP properties, including siderophore production (69.3%), phosphate solubilization (95.4 µg ml-1). The greatest production of Indol-3-Acetic Acid was belonged to A. atrobrunnea EJ-JSF4 (114.5 µg ml-1). The analysis of FUNGuild revealed the abundance of symbiotrophs over other trophic modes, and the guild of endophytes was commonly assigned in all samples. For the first time, this study uncovered fungal diversity associated with jojoba plants using a culture-independent approach and in-vitro assessed the roles of cultivable fungal strains in promoting plant growth and biocontrol. The present study indicated the significance of jojoba shrubs as a potential source of diverse fungi with high biocontrol and PGP activities.
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Affiliation(s)
- Mustafa Elbakary
- Biotechnology Program, Basic and Applied Science Institute, Egypt-Japan University of Science and Technology, Alexandria, 21934, Egypt.
- Department of Nucleic Acids and Protein Structure, Agricultural Research Center, Agricultural Genetic Engineering Research Institute, Giza, 12619, Egypt.
| | - Sherif F Hammad
- Pharm D Program, Egypt-Japan University of Science and Technology, New Borg El-Arab City, Alexandria, 21934, Egypt
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo, 11795, Egypt
| | - Sameh H Youseif
- School of Biotechnology, Nile University, Giza, 12677, Egypt.
- Department of Microbial Genetic Resources, Agricultural Research Center (ARC), National Gene Bank, Giza, 12619, Egypt.
| | - Hesham S M Soliman
- Pharm D Program, Egypt-Japan University of Science and Technology, New Borg El-Arab City, Alexandria, 21934, Egypt
- Pharmacognosy Department, Helwan University, Ain-Helwan, Cairo, 11795, Egypt
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Chen Y, Fu W, Xiao H, Zhai Y, Luo Y, Wang Y, Liu Z, Li Q, Huang J. A Review on Rhizosphere Microbiota of Tea Plant ( Camellia sinensis L): Recent Insights and Future Perspectives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:19165-19188. [PMID: 38019642 DOI: 10.1021/acs.jafc.3c02423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Rhizosphere microbial colonization of the tea plant provides many beneficial functions for the host, But the factors that influence the composition of these rhizosphere microbes and their functions are still unknown. In order to explore the interaction between tea plants and rhizosphere microorganisms, we summarized the current studies. First, the review integrated the known rhizosphere microbial communities of tea tree, including bacteria, fungi, and arbuscular mycorrhizal fungi. Then, various factors affecting tea rhizosphere microorganisms were studied, including: endogenous factors, environmental factors, and agronomic practices. Finally, the functions of rhizosphere microorganisms were analyzed, including (a) promoting the growth and quality of tea trees, (b) alleviating biotic and abiotic stresses, and (c) improving soil fertility. Finally, we highlight the gaps in knowledge of tea rhizosphere microorganisms and the future direction of development. In summary, understanding rhizosphere microbial interactions with tea plants is key to promoting the growth, development, and sustainable productivity of tea plants.
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Affiliation(s)
- Yixin Chen
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Wenjie Fu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Han Xiao
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Yuke Zhai
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, P.R. China
| | - Yu Luo
- Institute of Soil and Water Resources and Environmental Sciences, Zhejiang University, Hangzhou, Zhejiang 3100058, P.R. China
| | - Yingzi Wang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Zhonghua Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, P.R. China
| | - Qin Li
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, P.R. China
- Institute of Soil and Water Resources and Environmental Sciences, Zhejiang University, Hangzhou, Zhejiang 3100058, P.R. China
| | - Jianan Huang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, P.R. China
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Dikbaş N, Parlakova Karagöz F, Uçar S, Demir Y. Ornamental cabbage (Brassica oleracea var. acephala) responses to phytase enzyme purified from Lactobacillus coryniformis application. Biotechnol Appl Biochem 2023. [PMID: 36779503 DOI: 10.1002/bab.2449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 02/04/2023] [Indexed: 02/14/2023]
Abstract
In order to increase the quality and yield of ornamental plants, especially potted ornamental plants, it is necessary to enrich the physical properties of the growing medium and to ensure the continuity of the growing medium. In order to achieve this, organic substances that create a serious cost in ornamental plant cultivation are added to the growing medium. This study was planned to assess the role of inoculation of different levels in the seeds and soaking times of purified phytase, on the plant growth and ornamental plant decorative values in ornamental cabbage plants under nutrient limiting condition in greenhouse. Different doses (E0 : 0 EU, E1 : 5 EU, E2 : 10 EU), soaking times (W15 : 15 min, W30 : 30 min, W60 : 60 min), and their combinations (W15 + E0 , W15 + E1 , W15 + E2 , W30 + E0 , W30 + E1 , W30 + E2 , W60 + E0 , W60 + E1 , W60 + E2 ) of phytase enzyme purified and isolated from the Lactobacillus coryniformis were applied to ornamental cabbage seeds, and they were sown in plug trays filled with appropriate growing medium. Seedlings were planted in plastic pots during their period when the seedlings had four to five true leaves. Treatments of phytase enzyme purified and isolated from the microorganism generally improved the observed parameters. The application of, especially, the highest level of phytase enzyme doses increased the plant height, main stem height, and stem diameter of ornamental cabbage as compared to control (E0 treatment: distilled water). While the highest number of leaves per plant was obtained at E1 and E2 application doses and W30 and W60 soaking times; the highest stem diameter was obtained at E2 application doses and W30 and W60 soaking times. The present study clarified that the purified phytase enzyme can increase ornamental cabbage quality at the appropriate concentration and soaking time and is a promising biotechnology material for agricultural applications, and especially in different ornamental plant species.
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Affiliation(s)
- Neslihan Dikbaş
- Department of Agricultural Biotechnology, Agricultural Faculty, Ataturk University, Erzurum, Turkey
| | | | - Sevda Uçar
- Department of Herbal Production and Technologies, Faculty of Agricultural Sciences and Technology, Sivas Science and Technology University, Sivas, Turkey
| | - Yeliz Demir
- Department of Pharmacy Services, Nihat Delibalta Göle Vocational High School, Ardahan University, Ardahan, Turkey
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Rizwanuddin S, Kumar V, Singh P, Naik B, Mishra S, Chauhan M, Saris PEJ, Verma A, Kumar V. Insight into phytase-producing microorganisms for phytate solubilization and soil sustainability. Front Microbiol 2023; 14:1127249. [PMID: 37113239 PMCID: PMC10128089 DOI: 10.3389/fmicb.2023.1127249] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 03/10/2023] [Indexed: 04/29/2023] Open
Abstract
The increasing demand for food has increased dependence on chemical fertilizers that promote rapid growth and yield as well as produce toxicity and negatively affect nutritional value. Therefore, researchers are focusing on alternatives that are safe for consumption, non-toxic, cost-effective production process, and high yielding, and that require readily available substrates for mass production. The potential industrial applications of microbial enzymes have grown significantly and are still rising in the 21st century to fulfill the needs of a population that is expanding quickly and to deal with the depletion of natural resources. Due to the high demand for such enzymes, phytases have undergone extensive research to lower the amount of phytate in human food and animal feed. They constitute efficient enzymatic groups that can solubilize phytate and thus provide plants with an enriched environment. Phytases can be extracted from a variety of sources such as plants, animals, and microorganisms. Compared to plant and animal-based phytases, microbial phytases have been identified as competent, stable, and promising bioinoculants. Many reports suggest that microbial phytase can undergo mass production procedures with the use of readily available substrates. Phytases neither involve the use of any toxic chemicals during the extraction nor release any such chemicals; thus, they qualify as bioinoculants and support soil sustainability. In addition, phytase genes are now inserted into new plants/crops to enhance transgenic plants reducing the need for supplemental inorganic phosphates and phosphate accumulation in the environment. The current review covers the significance of phytase in the agriculture system, emphasizing its source, action mechanism, and vast applications.
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Affiliation(s)
- Sheikh Rizwanuddin
- Department Food Science and Technology, Graphic Era (Deemed to be University), Dehradun, India
| | - Vijay Kumar
- Himalayan School of Biosciences, Swami Rama Himalayan University, Dehradun, India
| | - Pallavi Singh
- Department of Biotechnology, Graphic Era (Deemed to be University), Dehradun, India
| | - Bindu Naik
- Department Food Science and Technology, Graphic Era (Deemed to be University), Dehradun, India
- *Correspondence: Bindu Naik,
| | - Sadhna Mishra
- Faculty of Agricultural Sciences, GLA University, Mathura, India
| | - Mansi Chauhan
- Department of Microbiology, Graphic Era (Deemed to be University), Dehradun, India
| | - Per Erik Joakim Saris
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
- Per Erik Joakim Saris,
| | - Ankit Verma
- Himalayan School of Biosciences, Swami Rama Himalayan University, Dehradun, India
| | - Vivek Kumar
- Himalayan School of Biosciences, Swami Rama Himalayan University, Dehradun, India
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Aleynova OA, Nityagovsky NN, Suprun AR, Ananev AA, Dubrovina AS, Kiselev KV. The Diversity of Fungal Endophytes from Wild Grape Vitis amurensis Rupr. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11212897. [PMID: 36365346 PMCID: PMC9654312 DOI: 10.3390/plants11212897] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 10/22/2022] [Accepted: 10/24/2022] [Indexed: 06/09/2023]
Abstract
Grapevine endophytic fungi have great potential for application in agriculture and represent an important source of various compounds with valuable biological activities. Wild grapevine is known to host a great number of rare and unidentified endophytes and may represent a rich repository of potential vineyard biocontrol agents. This investigation aimed to study the fungal endophytic community of wild grape Vitis amurensis Rupr. using a cultivation-dependent (fungi sowing) and a cultivation-independent (next-generation sequencing, NGS) approach. A comprehensive analysis of the endophytic fungal community in different organs of V. amurensis and under different environmental conditions has been performed. According to the NGS analysis, 12 taxa of class level were presented in different grapevine organs (stem, leaf, berry, seed). Among the 12 taxa, sequences of two fungal classes were the most represented: Dothideomycetes-60% and Tremellomycetes-33%. The top five taxa included Vishniacozyma, Aureobasidiaceae, Cladosporium, Septoria and Papiliotrema. The highest number of fungal isolates and sequences were detected in the grape leaves. The present data also revealed that lower temperatures and increased precipitation favored the number and diversity of endophytic fungi in the wild Amur grape. The number of fungi recovered from grape tissues in autumn was two times higher than in summer. Thus, this study is the first to describe and analyze the biodiversity of the endophytic fungal community in wild grapevine V. amurensis.
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Jiawen C, Yuan W, Xin Z, Junjie G, Xing H, Jinglei X. Diversity analysis of leaf endophytic fungi and rhizosphere soil fungi of Korean Epimedium at different growth stages. ENVIRONMENTAL MICROBIOME 2022; 17:52. [PMID: 36271421 PMCID: PMC9585767 DOI: 10.1186/s40793-022-00446-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Rhizosphere fungi and endophytic fungi play key roles in plant growth and development; however, their role in the growth of Epimedium koreanum Nakai at different stages remains unclear. Here, we used the Illumina MiSeq system, a high-throughput sequencing technology, to study the endophytic fungi and rhizosphere microbiome of Korean Epimedium. RESULTS Epimedium koreanum Nakai rhizosphere soil and leaves had highly diverse fungal communities during the growth process. The relative abundance of soil fungi in the rhizosphere stage was higher than that of leaf endophytic fungi in the early growth stage, but the overall abundance was basically equal. Sebacina is a significantly divergent fungal genera, and Sebacina sp. are present among leaf fungi species in the rhizosphere soil of Epimedium koreanum Nakai. Sebacina sp. can move to each other in rhizosphere soil fungi and leaf endophytes. VIF (variance inflation factor) analysis showed that soluble salt, whole nitrogen, alkaline lysis nitrogen, whole phosphorus, total potassium, and fast-acting potassium are useful environmental factors for rhizosphere soil and leaf endophytic fungi: potassium, total nitrogen, whole phosphorus, and three environmental factors were significantly and positively associated with the relative abundance of Sebacina sp. CONCLUSIONS (1) This study is the first to clarify the species diversity of fungi in Epimedium koreanum Nakai leaf and rhizosphere soil. (2) Different fungal communities of rhizosphere soil fungi and leaf endophytic fungi at different growth stages of Epimedium koreanum Nakai were examined. (3) Sebacina sp. can move to each other between rhizosphere soil fungi and leaf endophytic fungi. (4) Nitrogen, phosphorus and potassium elements in the environment have a significant positive effect on the relative abundance of Sebacina sp.
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Affiliation(s)
- Chen Jiawen
- Institute of Identification Department of Traditional Chinese Medicine, Changchun University of Traditional Chinese Medicine, Changchun, Jin Lin Province China
| | - Wu Yuan
- Institute of Identification Department of Traditional Chinese Medicine, Changchun University of Traditional Chinese Medicine, Changchun, Jin Lin Province China
| | - Zhuang Xin
- Institute of Identification Department of Traditional Chinese Medicine, Changchun University of Traditional Chinese Medicine, Changchun, Jin Lin Province China
| | - Guo Junjie
- Institute of Identification Department of Traditional Chinese Medicine, Changchun University of Traditional Chinese Medicine, Changchun, Jin Lin Province China
| | - Hu Xing
- Institute of Identification Department of Traditional Chinese Medicine, Changchun University of Traditional Chinese Medicine, Changchun, Jin Lin Province China
| | - Xiao Jinglei
- Institute of Identification Department of Traditional Chinese Medicine, Changchun University of Traditional Chinese Medicine, Changchun, Jin Lin Province China
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Chaiwan N, Jeewon R, Pem D, Jayawardena RS, Nazurally N, Mapook A, Promputtha I, Hyde KD. New Species of Discosia rhododendricola, Neopestalotiopsis rhododendricola and New Geographical Record of Diaporthe nobilis from Rhododendron sp. J Fungi (Basel) 2022; 8:jof8090907. [PMID: 36135632 PMCID: PMC9504118 DOI: 10.3390/jof8090907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 12/04/2022] Open
Abstract
In the present study, we report two new asexual fungal species (i.e., Discosia rhododendricola, Neopestalotiopsis rhododendricola (Sporocadaceae) and a new host for a previously described species (i.e., Diaporthe nobilis; Diaporthaceae). All species were isolated from Rhododendron spp. in Kunming, Yunnan Province, China. All taxa are described based on morphology, and phylogenetic relationships were inferred using a multigenic approach (LSU, ITS, RPB2, TEF1 and TUB2). The phylogenetic analyses indicated that D. rhododendronicola sp. nov. is phylogenetically related to D. muscicola, and N. rhododendricola sp. nov is related to N. sonnaratae. Diaporthe nobilis is reported herein as a new host record from Rhododendron sp. for China, and its phylogeny is depicted based on ITS, TEF1 and TUB2 sequence data.
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Affiliation(s)
- Napalai Chaiwan
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Rajesh Jeewon
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit 80837, Mauritius
| | - Dhandevi Pem
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | | | - Nadeem Nazurally
- Department of Agricultural and Food Science, Faculty of Agriculture, University of Mauritius, Reduit 80837, Mauritius
| | - Ausana Mapook
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Itthayakorn Promputtha
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kevin D. Hyde
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Innovative Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China
- Correspondence:
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Functional Genetic Diversity and Plant Growth Promoting Potential of Polyphosphate Accumulating Bacteria in Soil. Microbiol Spectr 2022; 10:e0034521. [PMID: 35196785 PMCID: PMC8865437 DOI: 10.1128/spectrum.00345-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Polyphosphate (polyP) accumulation is an important trait of microorganisms. Implication of polyP accumulating bacteria (PAB) in enhanced biological phosphate removal, heavy metal sequestration, and dissolution of dental enamel is well studied. Phosphorous (P) accumulated within microbial biomass also regulates labile P in soil; however, abundance and diversity of the PAB in soil is still unexplored. Present study investigated the genetic and functional diversity of PAB in rhizosphere soil. Here, we report the abundance of Pseudomonas spp. as high PAB in soil, suggesting their contribution to global P cycling. Additional subset analysis of functional genes i.e., polyphosphate kinase (ppk) and exopolyphosphatase (ppx) in all PAB, indicates their significance in bacterial growth and metabolism. Distribution of functional genes in phylogenetic tree represent a more biologically realistic discrimination for the two genes. Distribution of ppx gene disclosed its phylogenetic conservation at species level, however, clustering of ppk gene of similar species in different clades illustrated its environmental condition mediated modifications. Selected PAB showed tolerance to abiotic stress and strong correlation with plant growth promotary (PGP) traits viz. phosphate solubilization, auxin and siderophore production. Interaction of PAB with A. thaliana enhanced the growth and phosphate status of the plant under salinity stress, suggestive of their importance in P cycling and stress alleviation. IMPORTANCE Study discovered the abundance of Pseudomonas genera as a high phosphate accumulator in soil. The presence of functional genes (polyphosphate kinase [ppk] and exopolyphosphatase [ppx]) in all PAB depicts their importance in polyphosphate metabolism in bacteria. Genetic and functional diversity reveals conservation of the ppx gene at species level. Furthermore, we found a positive correlation between PAB and plant growth promotary traits, stress tolerance, and salinity stress alleviation in A. thaliana.
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Escobar Diaz PA, Dos Santos RM, Baron NC, Gil OJA, Rigobelo EC. Effect of Aspergillus and Bacillus Concentration on Cotton Growth Promotion. Front Microbiol 2021; 12:737385. [PMID: 34721334 PMCID: PMC8548773 DOI: 10.3389/fmicb.2021.737385] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 08/27/2021] [Indexed: 11/28/2022] Open
Abstract
There are no studies in literature on the effect of inoculant concentrations on plant growth promotion. Therefore, in the present study, two experiments were carried out, one under pot conditions and the other in the field with cotton crop, in order to verify the effect of Aspergillus and Bacillus concentrations on the biometric and nutritional parameters of plant and soil, in addition to yield. The pot experiment evaluated the effect of different concentrations, ranging from 1 × 104 to 1 × 1010 colony-forming units per milliliter (CFU mL–1) of microorganisms Bacillus velezensis (Bv188), Bacillus subtilis (Bs248), B. subtilis (Bs290), Aspergillus brasiliensis (F111), Aspergillus sydowii (F112), and Aspergillus sp. versicolor section (F113) on parameters plant growth promotion and physicochemical and microbiological of characteristics soil. Results indicated that the different parameters analyzed are influenced by the isolate and microbial concentrations in a different way and allowed the selection of four microorganisms (Bs248, Bv188, F112, and F113) and two concentrations (1 × 104 and 1 × 1010 CFU mL–1), which were evaluated in the field to determine their effect on yield. The results show that, regardless of isolate, inoculant concentrations promoted the same fiber and seed cotton yield. These results suggest that lower inoculant concentrations may be able to increase cotton yield, eliminating the need to use concentrated inoculants with high production cost.
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Affiliation(s)
- Paola Andrea Escobar Diaz
- Laboratory of Soil Microbiology, Faculty of Agricultural and Veterinary Sciences, Department of Agricultural Production Sciences, São Paulo State University, São Paulo, Brazil
| | - Roberta Mendes Dos Santos
- Laboratory of Soil Microbiology, Faculty of Agricultural and Veterinary Sciences, Department of Agricultural Production Sciences, São Paulo State University, São Paulo, Brazil
| | - Noemi Carla Baron
- Laboratory of Soil Microbiology, Faculty of Agricultural and Veterinary Sciences, Department of Agricultural Production Sciences, São Paulo State University, São Paulo, Brazil
| | - Oniel Jeremias Aguirre Gil
- Laboratory of Soil Microbiology, Faculty of Agricultural and Veterinary Sciences, Department of Agricultural Production Sciences, São Paulo State University, São Paulo, Brazil
| | - Everlon Cid Rigobelo
- Laboratory of Soil Microbiology, Faculty of Agricultural and Veterinary Sciences, Department of Agricultural Production Sciences, São Paulo State University, São Paulo, Brazil
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Li JT, Lu JL, Wang HY, Fang Z, Wang XJ, Feng SW, Wang Z, Yuan T, Zhang SC, Ou SN, Yang XD, Wu ZH, Du XD, Tang LY, Liao B, Shu WS, Jia P, Liang JL. A comprehensive synthesis unveils the mysteries of phosphate-solubilizing microbes. Biol Rev Camb Philos Soc 2021; 96:2771-2793. [PMID: 34288351 PMCID: PMC9291587 DOI: 10.1111/brv.12779] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 12/22/2022]
Abstract
Phosphate-solubilizing microbes (PSMs) drive the biogeochemical cycling of phosphorus (P) and hold promise for sustainable agriculture. However, their global distribution, overall diversity and application potential remain unknown. Here, we present the first synthesis of their biogeography, diversity and utility, employing data from 399 papers published between 1981 and 2017, the results of a nationwide field survey in China consisting of 367 soil samples, and a genetic analysis of 12986 genome-sequenced prokaryotic strains. We show that at continental to global scales, the population density of PSMs in environmental samples is correlated with total P rather than pH. Remarkably, positive relationships exist between the population density of soil PSMs and available P, nitrate-nitrogen and dissolved organic carbon in soil, reflecting functional couplings between PSMs and microbes driving biogeochemical cycles of nitrogen and carbon. More than 2704 strains affiliated with at least nine archaeal, 88 fungal and 336 bacterial species were reported as PSMs. Only 2.59% of these strains have been tested for their efficiencies in improving crop growth or yield under field conditions, providing evidence that PSMs are more likely to exert positive effects on wheat growing in alkaline P-deficient soils. Our systematic genetic analysis reveals five promising PSM genera deserving much more attention.
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Affiliation(s)
- Jin-Tian Li
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China.,School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Jing-Li Lu
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Hong-Yu Wang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Zhou Fang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Xiao-Juan Wang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Shi-Wei Feng
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Zhang Wang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Ting Yuan
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Sheng-Chang Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Shu-Ning Ou
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Xiao-Dan Yang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Zhuo-Hui Wu
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Xiang-Deng Du
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Ling-Yun Tang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Bin Liao
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Wen-Sheng Shu
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China.,Guangdong Provincial Key Laboratory of Chemical Pollution, South China Normal University, Guangzhou, 510006, PR China
| | - Pu Jia
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Jie-Liang Liang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
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11
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Harnessing the Rhizosphere of the Halophyte Grass Aeluropus littoralis for Halophilic Plant-Growth-Promoting Fungi and Evaluation of Their Biostimulant Activities. PLANTS 2021; 10:plants10040784. [PMID: 33923476 PMCID: PMC8073152 DOI: 10.3390/plants10040784] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/01/2021] [Accepted: 04/14/2021] [Indexed: 11/17/2022]
Abstract
Hydroponic systems have gained interest and are increasingly used in hot and dry desert areas. Numbers of benefits are offered by hydroponic systems such as the ability to save water, enhance nutrients use efficiency, easy environmental control, and prevention of soil-borne diseases. However, the high consumption of chemical fertilizers for nutrient solution and the sensitivity of closed hydroponic systems to salinity are issues that need solutions. Thus, the main goal of our research activities is to isolate plant growth promoting fungi in order to develop sustainable hydroponic systems. We are working on isolating and testing the possibility to incorporate the cell-free filtrate (CFF) of plant growth promoting fungi (PGPF) in the composition of the nutrient solution. In this work, we isolated six strains of PGPF from the rhizosphere of the halophyte grass Aeluropus littoralis. Phylogenetic analyses of DNA sequences amplified by ITS1 and ITS4 primers identified the isolated fungi as: Byssochlamys spectabilis, Chaetomium globosum, Cephalotheca foveolata, Penicillium melinii, Alternaria tenuissima, and Nigrospora chinensis. The promoting of vigor in tobacco seedlings was used as criteria to evaluate the biostimulant activity of these fungi by adding either their mycelia (DE: direct effect) or their cell-free filtrates (CFF: indirect effect) to the plant-growth media. The best significant growth stimulation was obtained with plants treated by B. spectabilis. However, only the CFFs of Byssochlamys spectabilis (A5.1) and Penicillium melinii (A8) when added at a dilution factor of 1/50 to half-strength nutritive solution (0.5NS) resulted in significant improvement of all assessed growth parameters. Indeed, the A5.1CFF and A8CFF in 0.5NS induced a significant better increase in the biomass production when compared to NS or 0.5NS alone. All fungi produced indole acetic acid in the CFFs, which could be one of the key factors explaining their biostimulant activities. Furthermore, six genes involved in nitrogen-metabolism (NR1 and NRT1), auxin biosynthesis (Tryp1 and YUCCA6-like), and brassinosteroid biosynthesis (DET2 and DWF4) were shown to be induced in roots or leaves following treatment of plants with the all CFFs. This work opens up a prospect to study in deep the biostimulant activity of PGPFs and their applications to decrease the requirement of chemical fertilizers in the hydroponic growing systems.
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Costa D, Tavares RM, Baptista P, Lino-Neto T. Cork Oak Endophytic Fungi as Potential Biocontrol Agents against Biscogniauxia mediterranea and Diplodia corticola. J Fungi (Basel) 2020; 6:E287. [PMID: 33202643 PMCID: PMC7711870 DOI: 10.3390/jof6040287] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 01/06/2023] Open
Abstract
An increase in cork oak diseases caused by Biscogniauxia mediterranea and Diplodia corticola has been reported in the last decade. Due to the high socio-economic and ecologic importance of this plant species in the Mediterranean Basin, the search for preventive or treatment measures to control these diseases is an urgent need. Fungal endophytes were recovered from cork oak trees with different disease severity levels, using culture-dependent methods. The results showed a higher number of potential pathogens than beneficial fungi such as cork oak endophytes, even in healthy plants. The antagonist potential of a selection of eight cork oak fungal endophytes was tested against B. mediterranea and D. corticola by dual-plate assays. The tested endophytes were more efficient in inhibiting D. corticola than B. mediterranea growth, but Simplicillium aogashimaense, Fimetariella rabenhorstii, Chaetomium sp. and Alternaria alternata revealed a high potential to inhibit the growth of both. Simplicillium aogashimaense caused macroscopic and microscopic mycelial/hyphal deformations and presented promising results in controlling both phytopathogens' growth in vitro. The evaluation of the antagonistic potential of non-volatile and volatile compounds also revealed that A. alternata compounds could be further explored for inhibiting both pathogens. These findings provide valuable knowledge that can be further explored in in vivo assays to find a suitable biocontrol agent for these cork oak diseases.
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Affiliation(s)
- Daniela Costa
- BioSystems & Integrative Sciences Institute (BioISI), Plant Functional Biology Centre, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (D.C.); (R.M.T.)
| | - Rui M. Tavares
- BioSystems & Integrative Sciences Institute (BioISI), Plant Functional Biology Centre, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (D.C.); (R.M.T.)
| | - Paula Baptista
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal;
| | - Teresa Lino-Neto
- BioSystems & Integrative Sciences Institute (BioISI), Plant Functional Biology Centre, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (D.C.); (R.M.T.)
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13
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Doilom M, Guo JW, Phookamsak R, Mortimer PE, Karunarathna SC, Dong W, Liao CF, Yan K, Pem D, Suwannarach N, Promputtha I, Lumyong S, Xu JC. Screening of Phosphate-Solubilizing Fungi From Air and Soil in Yunnan, China: Four Novel Species in Aspergillus, Gongronella, Penicillium, and Talaromyces. Front Microbiol 2020; 11:585215. [PMID: 33123114 PMCID: PMC7574596 DOI: 10.3389/fmicb.2020.585215] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 09/11/2020] [Indexed: 11/25/2022] Open
Abstract
Phosphate-solubilizing fungi (PSF) play an important role in increasing the bioavailability of phosphorus in soils for plants. Thirteen fungal strains, one collected from air and 12 from soil, were screened and described here in detail. These fungal strains were tested for their ability to solubilize tricalcium phosphate (TCP) on both solid and liquid Pikovskaya (PVK) media in vitro. The airborne fungal strain KUMCC 18-0196 (Aspergillus hydei sp. nov.) showed the most significant phosphate solubilizing activity on a solid PVK medium with the solubilization index (SI) (2.58 ± 0.04 cm) and the highest solubilized phosphates (1523.33 ± 47.87 μg/mL) on a liquid PVK medium. To the best of our knowledge, A. hydei sp. nov. is the first phosphate-solubilizing fungus reported from air. We also provide the identification especially for Aspergillus, Penicillium and Talaromyces, generally reported as PSF. It is important to not only screen for PSF but also identify species properly so that researchers have a clearer taxonomic picture for identifying potential taxa for future plant growth-promoting applications. Herein, A. hydei (section Nigri), Gongronella hydei, Penicillium soli (section Lanata-Divaricata) and Talaromyces yunnanensis (section Talaromyces) are fully described and introduced as new to science. These four new species are identified based on both morphological characteristics and multigene phylogenetic analyses, including the genealogical concordance phylogenetic species recognition method where necessary. Penicillium austrosinense is considered to be a synonym of P. guaibinense.
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Affiliation(s)
- Mingkwan Doilom
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Innovation Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- World Agroforestry Centre, East and Central Asia, Kunming, China
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Jian-Wei Guo
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Innovation Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- World Agroforestry Centre, East and Central Asia, Kunming, China
| | - Rungtiwa Phookamsak
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Innovation Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- World Agroforestry Centre, East and Central Asia, Kunming, China
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Peter E. Mortimer
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Innovation Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Samantha C. Karunarathna
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Innovation Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- World Agroforestry Centre, East and Central Asia, Kunming, China
| | - Wei Dong
- Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand
| | - Chun-Fang Liao
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Innovation Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- World Agroforestry Centre, East and Central Asia, Kunming, China
| | - Kai Yan
- College of Resources and Environment, Yunnan Agricultural University, Kunming, China
| | - Dhandevi Pem
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand
| | - Nakarin Suwannarach
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Itthayakorn Promputtha
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Bioresources for Agriculture, Industry and Medicine, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Saisamorn Lumyong
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok, Thailand
| | - Jian-Chu Xu
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Honghe Innovation Center for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- World Agroforestry Centre, East and Central Asia, Kunming, China
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14
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Karagöz FP, Demir Y, Kotan MŞ, Dursun A, Beydemir Ş, Dikbaş N. Purification of the phytase enzyme from Lactobacillus plantarum: The effect on pansy growth and macro-micro element content. Biotechnol Appl Biochem 2020; 68:1067-1075. [PMID: 32919432 DOI: 10.1002/bab.2026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In the present study, the phytase enzyme was purified from Lactobacillus plantarum with a 3.08% recovery, 9.57-purification fold, and with a specific activity of 278.82 EU/mg protein. Then, the effects of the 5 EU and 10 EU purified phytase was determined on the plant growth, quality, the macro-micro nutrient content of pansy (Viola × wittrockiana), which is of great importance in ornamental plants industry. The research was established under greenhouse conditions with natural light in 2017. The pansy seeds were coated with phytase enzyme solution, sown in a peat environment, and transferred to pots at the seedling period. In general, the 5 EU and 10 EU applications increase plant height, the number of leaves per plant, the number of side branches per plant, and flower height parameters compared to control. Also, micro- and macronutrient values in soil and plant samples were examined. According to the results, the phytase application on pansy cultivation positively affected the properties and yielded high quality of plants.
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Affiliation(s)
| | - Yeliz Demir
- Department of Pharmacy Services, Nihat Delibalta Göle Vocational High School, Ardahan University, Ardahan, Turkey
| | - Merve Şenol Kotan
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ataturk University, Erzurum, Turkey
| | - Atilla Dursun
- Department of Horticulture, Faculty of Agriculture, Atatürk University, Erzurum, Turkey
| | - Şükrü Beydemir
- Department Biochemistry, Faculty Pharmacy, Anadolu University, Eskişehir, Turkey.,The Rectorate of Bilecik Şeyh Edebali University, Bilecik, Turkey
| | - Neslihan Dikbaş
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ataturk University, Erzurum, Turkey
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15
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Nicoletti R, Di Vaio C, Cirillo C. Endophytic Fungi of Olive Tree. Microorganisms 2020; 8:E1321. [PMID: 32872625 PMCID: PMC7565531 DOI: 10.3390/microorganisms8091321] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/20/2020] [Accepted: 08/28/2020] [Indexed: 12/13/2022] Open
Abstract
In addition to the general interest connected with investigations on biodiversity in natural contexts, more recently the scientific community has started considering occurrence of endophytic fungi in crops in the awareness of the fundamental role played by these microorganisms on plant growth and protection. Crops such as olive tree, whose management is more and more frequently based on the paradigm of sustainable agriculture, are particularly interested in the perspective of a possible applicative employment, considering that the multi-year crop cycle implies a likely higher impact of these symbiotic interactions. Aspects concerning occurrence and effects of endophytic fungi associated with olive tree (Olea europaea) are revised in the present paper.
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Affiliation(s)
- Rosario Nicoletti
- Council for Agricultural Research and Economics, Research Centre for Olive, Fruit and Citrus Crops, 81100 Caserta, Italy;
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy;
| | - Claudio Di Vaio
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy;
| | - Chiara Cirillo
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy;
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16
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Isolation and Characterization of Bacillus spp. Endowed with Multifarious Plant Growth-Promoting Traits and Their Potential Effect on Tomato (Lycopersicon esculentum) Seedlings. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2020. [DOI: 10.1007/s13369-020-04543-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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18
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Kurli R, Chaudhari D, Pansare AN, Khairnar M, Shouche YS, Rahi P. Cultivable Microbial Diversity Associated With Cellular Phones. Front Microbiol 2018; 9:1229. [PMID: 29930546 PMCID: PMC6000418 DOI: 10.3389/fmicb.2018.01229] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 05/22/2018] [Indexed: 12/15/2022] Open
Abstract
A substantial majority of global population owns cellular phones independently to demographic factors like age, economic status, and educational attainment. In this study, we investigated the diversity of microorganisms associated with cellular phones of 27 individuals using cultivation-based methods. Cellular phones were sampled using cotton swabs and a total of 554 isolates representing different morphotypes were obtained on four growth media. Matrix-assisted laser desorption ionization time of flight (MALDI-TOF) mass spectrometry could generate protein profiles for 527 isolates and species-level identification was obtained for 415 isolates. A dendrogram was constructed based on the protein profiles of the remaining isolates, to group 112 isolates under 39 different proteotypes. The representative strains of each group were selected for 16S rRNA gene and ITS region sequencing based identification. Staphylococcus, Bacillus, Micrococcus, and Pseudomonas were the most frequently encountered bacteria, and Candida, Aspergillus, Aureobasidium, and Cryptococcus were in case of fungi. At species-level the prevalence of Micrococcus luteus, Staphylococcus hominis, Staphylococcus epidermidis, Staphylococcus arlettae, Bacillus subtilis, and Candida parapsilosis was observed, most of these species are commensal microorganisms of human skin. UPGMA dendrogram and PCoA biplot generated based on the microbial communities associated with all cellular phones exhibited build-up of specific communities on cellular phones and the prevalence of objectionable microorganisms in some of the cellular phones can be attributed to the poor hygiene and sanitary practices. The study also revealed the impact of MALDI-TOF MS spectral quality on the identification results. Overall MALDI-TOF appears a powerful tool for routine microbial identification and de-replication of microorganisms. Quality filtering of MALDI-TOF MS spectrum, development of better sample processing methods and enriching the spectral database will improve the role of MALDI-TOF MS in microbial identifications.
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Affiliation(s)
- Rashmi Kurli
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, India
| | - Diptaraj Chaudhari
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, India
| | - Aabeejjeet N Pansare
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, India
| | - Mitesh Khairnar
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, India
| | - Yogesh S Shouche
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, India
| | - Praveen Rahi
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, India
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19
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Singh RP, Jha PN. The Multifarious PGPR Serratia marcescens CDP-13 Augments Induced Systemic Resistance and Enhanced Salinity Tolerance of Wheat (Triticum aestivum L.). PLoS One 2016; 11:e0155026. [PMID: 27322827 PMCID: PMC4913913 DOI: 10.1371/journal.pone.0155026] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 04/22/2016] [Indexed: 11/24/2022] Open
Abstract
The present study demonstrates the plant growth promoting (PGP) potential of a bacterial isolate CDP-13 isolated from ‘Capparis decidua’ plant, and its ability to protect plants from the deleterious effect of biotic and abiotic stressors. Based on 16S rRNA gene sequence analysis, the isolate was identified as Serratia marcescens. Among the PGP traits, the isolate was found to be positive for ACC deaminase activity, phosphate solubilization, production of siderophore, indole acetic acid production, nitrogen fixation, and ammonia production. CDP-13 showed growth at an increased salt (NaCl) concentration of up to 6%, indicating its potential to survive and associate with plants growing in saline soil. The inoculation of S. marcescens enhanced the growth of wheat plant under salinity stress (150–200 mM). It significantly reduced inhibition of plant growth (15 to 85%) caused by salt stressors. Application of CDP-13 also modulated concentration (20 to 75%) of different osmoprotectants (proline, malondialdehyde, total soluble sugar, total protein content, and indole acetic acid) in plants suggesting its role in enabling plants to tolerate salt stressors. In addition, bacterial inoculation also reduced the disease severity caused by fungal infection, which illustrated its ability to confer induced systemic resistance (ISR) in host plants. Treatment of wheat plants with the test organism caused alteration in anti-oxidative enzymes activities (Superoxide dismutase, Catalase, and Peroxidase) under various salinity levels, and therefore minimizes the salinity-induced oxidative damages to the plants. Colonization efficiency of strain CDP-13 was confirmed by CFU count, epi-fluorescence microscopy, and ERIC-PCR-based DNA fingerprinting approach. Hence, the study indicates that bacterium CDP-13 enhances plant growth, and has potential for the amelioration of salinity stress in wheat plants. Likewise, the results also provide insights into biotechnological approaches to using PGPR as an alternative to chemicals and pesticides.
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Affiliation(s)
- Rajnish Prakash Singh
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, 333031, Rajasthan, India
| | - Prabhat Nath Jha
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, 333031, Rajasthan, India
- * E-mail:
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Behera B, Singdevsachan S, Mishra R, Dutta S, Thatoi H. Diversity, mechanism and biotechnology of phosphate solubilising microorganism in mangrove—A review. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2014. [DOI: 10.1016/j.bcab.2013.09.008] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Multifarious beneficial traits and plant growth promoting potential of Serratia marcescens KiSII and Enterobacter sp. RNF 267 isolated from the rhizosphere of coconut palms (Cocos nucifera L.). World J Microbiol Biotechnol 2012; 29:109-17. [DOI: 10.1007/s11274-012-1163-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 08/25/2012] [Indexed: 10/27/2022]
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22
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Singh B, Satyanarayana T. Microbial phytases in phosphorus acquisition and plant growth promotion. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2011; 17:93-103. [PMID: 23572999 PMCID: PMC3550544 DOI: 10.1007/s12298-011-0062-x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Phosphorus (P) is one of the major constituents in energy metabolism and biosynthesis of nucleic acids and cell membranes with an important role in regulation of a number of enzymes. Soil phosphorous is an important macronutrient for plant growth. Phosphorus deficiency in soil is a major problem for agricultural production. Total soil P occurs in either organic or in organic form. Phytic acid as phytate (salts of phytic acid) is the major form of organic phosphorus in soil and it is not readily available to plants as a source of phosphorus because it either forms a complex with cations or adsorbs to various soil components. Phosphate solubilizing microorganisms are ubiquitous in soils and could play an important role in supplying P to plants. Microorganisms utilizing phytate are found in cultivated soils as well as in wetland, grassland and forest soils. Various fungi and bacteria (including plant growth promoting rhizobacteria) hydrolyze this organic form of phosphorus secreting phosphatases such as phytases and acidic/alkaline phosphatases. A large number of transgenic plants have been developed which were able to utilize sodium phytate as sole source of phosphorus. However, the recombinant phytases were similar to their wild type counterparts in terms of their properties. Increased phytase/phosphatase activity in transgenic plants may be an effective approach to promote their phytate-phosphorus utilization. The extracellular phytase activity of transgenic plant roots is a significant factor in the utilization of phosphorus from phytate. Furthermore, this indicated that an opportunity exists for using gene technology to improve the ability of plants to utilize accumulated forms of soil organic phosphorus. This review is focused on the role of phytases and phytase producing microbes in promoting the growth of different plants.
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Affiliation(s)
- Bijender Singh
- />Department of Microbiology, Maharshi Dayanand University, Rohtak, 124001 Haryana India
| | - T. Satyanarayana
- />Department of Microbiology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110 021 India
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