1
|
Tiepo AN, Fávaro MH, Amador TS, Tavares LF, Hertel MF, Calzavara AK, de Oliveira ALM, Oliveira HC, Dias-Pereira J, de Araújo HH, Bianchini E, Pimenta JA, Stolf-Moreira R. Associative Bacteria and Arbuscular Mycorrhizal Fungus Increase Drought Tolerance in Maize ( Zea mays L.) through Morphoanatomical, Physiological, and Biochemical Changes. PLANTS (BASEL, SWITZERLAND) 2024; 13:1667. [PMID: 38931099 PMCID: PMC11207481 DOI: 10.3390/plants13121667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024]
Abstract
Water deficiency has been recognized as a major abiotic stress that causes losses in maize crops around the world. The maize crop is very important due to the range of products that are derived from this plant. A potential way to reduce the damages caused by water deficiency in maize crops is through the association with plant growth-promoting bacteria (PGPB) and arbuscular mycorrhizal fungi (AMF). To define the mechanisms developed by associative PGPB and AMF in maize that are involved in protection against moderate drought (MD), this study evaluated the biometrical, anatomical, biochemical, and physiological parameters of maize grown under MD and inoculated with different PGPB (Azospirillum brasilense strain Ab-V5 and Bacillus sp. strain ZK) and with AMF. The relative water content did not change in the treatments. The association with ZK increased the shoot:total ratio, total dry weight, maximum quantum yield of photosystem II, vascular cylinder thickness, and vascular cylinder area. The Ab-V5 inoculation led to an increment in root dry weight, the area of metaxylem vessel elements, and nitrate reductase activity. The AMF association did not lead to changes in the measured parameters. The results indicate that the association with PGPB is a relevant alternative to contribute to reducing losses in maize crops under drought. However, AMF is not indicated for this crop under drought.
Collapse
Affiliation(s)
- Angélica Nunes Tiepo
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | - Mateus Henrique Fávaro
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | - Talita Silveira Amador
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | - Leonardo Fernandes Tavares
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | - Mariana Fernandes Hertel
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | - Anderson Kikuchi Calzavara
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | | | - Halley Caixeta Oliveira
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | - Jaqueline Dias-Pereira
- Institute of Biological and Health Sciences, UFV—Federal University of Viçosa, Rio Paranaíba 36570-900, MG, Brazil;
| | - Hugo Humberto de Araújo
- Department of Plant Biology, UFV—Federal University of Viçosa, Rio Paranaíba 36570-900, MG, Brazil;
| | - Edmilson Bianchini
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | - José Antonio Pimenta
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| | - Renata Stolf-Moreira
- Department of Animal and Plant Biology, UEL—State University of Londrina, Londrina 86057-970, PR, Brazil; (A.N.T.); (M.H.F.); (T.S.A.); (L.F.T.); (M.F.H.); (H.C.O.); (E.B.); (J.A.P.)
| |
Collapse
|
2
|
Abou Jaoudé R, Luziatelli F, Ficca AG, Ruzzi M. A plant's perception of growth-promoting bacteria and their metabolites. FRONTIERS IN PLANT SCIENCE 2024; 14:1332864. [PMID: 38328622 PMCID: PMC10848262 DOI: 10.3389/fpls.2023.1332864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 12/28/2023] [Indexed: 02/09/2024]
Abstract
Many recent studies have highlighted the importance of plant growth-promoting (rhizo)bacteria (PGPR) in supporting plant's development, particularly under biotic and abiotic stress. Most focus on the plant growth-promoting traits of selected strains and the latter's effect on plant biomass, root architecture, leaf area, and specific metabolite accumulation. Regarding energy balance, plant growth is the outcome of an input (photosynthesis) and several outputs (i.e., respiration, exudation, shedding, and herbivory), frequently neglected in classical studies on PGPR-plant interaction. Here, we discuss the primary evidence underlying the modifications triggered by PGPR and their metabolites on the plant ecophysiology. We propose to detect PGPR-induced variations in the photosynthetic activity using leaf gas exchange and recommend setting up the correct timing for monitoring plant responses according to the specific objectives of the experiment. This research identifies the challenges and tries to provide future directions to scientists working on PGPR-plant interactions to exploit the potential of microorganisms' application in improving plant value.
Collapse
Affiliation(s)
- Renée Abou Jaoudé
- Department for Innovation in Biological, Agrofood and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| | | | | | - Maurizio Ruzzi
- Department for Innovation in Biological, Agrofood and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| |
Collapse
|
3
|
Ribeiro VP, Gomes EA, de Sousa SM, de Paula Lana UG, Coelho AM, Marriel IE, de Oliveira-Paiva CA. Co-inoculation with tropical strains of Azospirillum and Bacillus is more efficient than single inoculation for improving plant growth and nutrient uptake in maize. Arch Microbiol 2022; 204:143. [PMID: 35044594 DOI: 10.1007/s00203-022-02759-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 11/26/2022]
Abstract
Usage of Bacillus and Azospirillum as new eco-friendly microbial consortium inoculants is a promising strategy to increase plant growth and crop yield by improving nutrient availability in agricultural sustainable systems. In this study, we designed a multispecies inoculum containing B. thuringiensis (strain B116), B. subtillis (strain B2084) and Azospirillum sp. (strains A1626 and A2142) to investigate their individual or co-inoculated ability to solubilize and mineralize phosphate, produce indole acetic acid (IAA) and their effect on maize growth promotion in hydroponics and in a non-sterile soil. All strains showed significant IAA production, P mineralization (sodium phytate) and Ca-P, Fe-P (tricalcium phosphate and iron phosphate, respectively) solubilization. In hydroponics, co-inoculation with A1626 x A2142, B2084 x A2142, B2084 x A1626 resulted in higher root total length, total surface area, and surface area of roots with diameter between 0 and 1 mm than other treatments with single inoculant, except B2084. In a greenhouse experiment, maize inoculated with the two Azospirillum strains exhibited enhanced shoot dry weight, shoot P and K content, root dry weight, root N and K content and acid and alkaline phosphatase activities than the other treatments. There was a significant correlation between soil P and P shoot, alkaline phosphatase and P shoot and between acid phosphatase and root dry weight. It may be concluded that co-inoculations are most effective than single inoculants strains, mainly between two selected Azospirillum strains. Thus, they could have synergistic interactions during maize growth, and be useful in the formulation of new inoculants to improve the tropical cropping systems sustainability.
Collapse
Affiliation(s)
| | | | - Sylvia Morais de Sousa
- Universidade Federal de São João del-Rei, São João del-Rei, MG, Brazil
- Embrapa Milho E Sorgo, Sete Lagoas, MG, 35701-970, Brazil
- Centro Universitário De Sete Lagoas, Sete Lagoas, MG, Brazil
| | - Ubiraci Gomes de Paula Lana
- Embrapa Milho E Sorgo, Sete Lagoas, MG, 35701-970, Brazil
- Centro Universitário De Sete Lagoas, Sete Lagoas, MG, Brazil
| | | | - Ivanildo Evódio Marriel
- Universidade Federal de São João del-Rei, São João del-Rei, MG, Brazil.
- Embrapa Milho E Sorgo, Sete Lagoas, MG, 35701-970, Brazil.
- Centro Universitário De Sete Lagoas, Sete Lagoas, MG, Brazil.
| | | |
Collapse
|
4
|
Zhang JY, Cun Z, Chen JW. Photosynthetic performance and photosynthesis-related gene expression coordinated in a shade-tolerant species Panax notoginseng under nitrogen regimes. BMC PLANT BIOLOGY 2020; 20:273. [PMID: 32593292 PMCID: PMC7321538 DOI: 10.1186/s12870-020-02434-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 05/10/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Nitrogen (N) is an essential component of photosynthetic apparatus. However, the mechanism that photosynthetic capacity is suppressed by N is not completely understood. Photosynthetic capacity and photosynthesis-related genes were comparatively analyzed in a shade-tolerant species Panax notoginseng grown under the levels of low N (LN), moderate N (MN) and high N (HN). RESULTS Photosynthetic assimilation was significantly suppressed in the LN- and HN-grown plants. Compared with the MN-grown plants, the HN-grown plants showed thicker anatomic structure and larger chloroplast accompanied with decreased ratio of mesophyll conductance (gm) to Rubisco content (gm/Rubisco) and lower Rubisco activity. Meanwhile, LN-grown plants displayed smaller chloroplast and accordingly lower internal conductance (gi). LN- and HN-grown individuals allocated less N to light-harvesting system (NL) and carboxylation system (NC), respectively. N surplus negatively affected the expression of genes in Car biosynthesis (GGPS, DXR, PSY, IPI and DXS). The LN individuals outperformed others with respect to non-photochemical quenching. The expression of genes (FBA, PGK, RAF2, GAPC, CAB, PsbA and PsbH) encoding enzymes of Calvin cycle and structural protein of light reaction were obviously repressed in the LN individuals, accompanying with a reduction in Rubisco content and activity. Correspondingly, the expression of genes encoding RAF2, RPI4, CAB and PetE were repressed in the HN-grown plants. CONCLUSIONS LN-induced depression of photosynthetic capacity might be caused by the deceleration on Calvin cycle and light reaction of photosynthesis, and HN-induced depression of ones might derive from an increase in the form of inactivated Rubisco.
Collapse
Affiliation(s)
- Jin-Yan Zhang
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, China
- Key Laboratory of Medical Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Zhu Cun
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, China
- Key Laboratory of Medical Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China
| | - Jun-Wen Chen
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, China.
- Key Laboratory of Medical Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, China.
- National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Kunming, 650201, China.
| |
Collapse
|
5
|
Vidotti MS, Lyra DH, Morosini JS, Granato ÍSC, Quecine MC, de Azevedo JL, Fritsche-Neto R. Additive and heterozygous (dis)advantage GWAS models reveal candidate genes involved in the genotypic variation of maize hybrids to Azospirillum brasilense. PLoS One 2019; 14:e0222788. [PMID: 31536609 PMCID: PMC6752820 DOI: 10.1371/journal.pone.0222788] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 09/07/2019] [Indexed: 11/18/2022] Open
Abstract
Maize genotypes can show different responsiveness to inoculation with Azospirillum brasilense and an intriguing issue is which genes of the plant are involved in the recognition and growth promotion by these Plant Growth-Promoting Bacteria (PGPB). We conducted Genome-Wide Association Studies (GWAS) using additive and heterozygous (dis)advantage models to find candidate genes for root and shoot traits under nitrogen (N) stress and N stress plus A. brasilense. A total of 52,215 Single Nucleotide Polymorphism (SNP) markers were used for GWAS analyses. For the six root traits with significant inoculation effect, the GWAS analyses revealed 25 significant SNPs for the N stress plus A. brasilense treatment, in which only two were overlapped with the 22 found for N stress only. Most were found by the heterozygous (dis)advantage model and were more related to exclusive gene ontology terms. Interestingly, the candidate genes around the significant SNPs found for the maize-A. brasilense association were involved in different functions previously described for PGPB in plants (e.g. signaling pathways of the plant's defense system and phytohormone biosynthesis). Our findings are a benchmark in the understanding of the genetic variation among maize hybrids for the association with A. brasilense and reveal the potential for further enhancement of maize through this association.
Collapse
Affiliation(s)
- Miriam Suzane Vidotti
- Department of Genetics, “Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| | | | - Júlia Silva Morosini
- Department of Genetics, “Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| | | | - Maria Carolina Quecine
- Department of Genetics, “Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - João Lúcio de Azevedo
- Department of Genetics, “Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Roberto Fritsche-Neto
- Department of Genetics, “Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| |
Collapse
|
6
|
Zeffa DM, Perini LJ, Silva MB, de Sousa NV, Scapim CA, de Oliveira ALM, do Amaral Júnior AT, Azeredo Gonçalves LS. Azospirillum brasilense promotes increases in growth and nitrogen use efficiency of maize genotypes. PLoS One 2019; 14:e0215332. [PMID: 30998695 PMCID: PMC6472877 DOI: 10.1371/journal.pone.0215332] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/29/2019] [Indexed: 11/19/2022] Open
Abstract
The development of cultivars with an improved nitrogen use efficiency (NUE) together with the application of plant growth-promoting bacteria is considered one of the main strategies for reduction of fertilizers use. In this sense, this study: i) evaluated the effect of Azospirillum brasilense on the initial development of maize genotypes; ii) investigated the influence of A. brasilense inoculation on NUE under nitrogen deficit; and iii) sought for more NUE genotypes with higher responsiveness to A. brasilense inoculation. Twenty-seven maize genotypes were evaluated in three independent experiments. The first evaluated the initial development of maize genotypes with and without A. brasilense (strain Ab-V5) inoculation of seeds on germination paper in a growth chamber. The second and third experiments were carried out in a greenhouse using Leonard pots and pots with substrate, respectively, and the genotypes were evaluated at high nitrogen, low nitrogen and low nitrogen plus A. brasilense Ab-V5 inoculation. The inoculation of seeds with A. brasilense Ab-V5 intensified plant growth, improved biochemical traits and raised NUE under nitrogen deficit. The inoculation of seeds with A. brasilense can be considered an economically viable and environmentally sustainable strategy for maize cultivation.
Collapse
Affiliation(s)
| | - Luiz Júnior Perini
- Department of Agronomy, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Mayara Barbosa Silva
- Department of Agronomy, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | | | | | | | | |
Collapse
|