Endophytic Fungi Assures Tropical Forage Grass Growth by Water Stress Tolerances

Forage plants is the base of beef and dairy cattle production. While water stress limits agricultural production worldwide, endophytic fungi can play a beneficial role for plants, such as tolerance to biotic and abiotic stresses. The objective of this work was to evaluate the effect of inoculation o...

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Published in:Current microbiology 2021-12, Vol.78 (12), p.4060-4071
Main Authors: Azevedo, Raphael Passaglia, Alves, Natálie Martins, Costa, Ingrid Araújo, Domingues, Mariany Isabela Soares, Bandória, Natália de Aguiar, de Figueiredo, Ulisses José, de Medeiros, Flavio Henrique Vasconcelos, Silva, Bruno Montoani, Cardoso, Patrícia Gomes
Format: Article
Language:English
Subjects:
Agricultural production
Biomedical and Life Sciences
Biotechnology
Cattle production
Dairy cattle
Drought
Endophytes
Estuaries
Forage
Fungi
Grasses
Inoculation
Life Sciences
Microbiology
Paraconiothyrium
Plant growth
Shoots
Soil moisture
Tolerances
Water deficit
Water shortages
Water stress
Water supply
Wilting
Wilting point
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Summary:Forage plants is the base of beef and dairy cattle production. While water stress limits agricultural production worldwide, endophytic fungi can play a beneficial role for plants, such as tolerance to biotic and abiotic stresses. The objective of this work was to evaluate the effect of inoculation of the endophytic fungi Paraconiothyrium estuarinum (CML 3695, CML 3696, CML 3699) and Paraconiothyrium cyclothyrioides (CML 3697, CML 3698) on agronomic characteristics of two forage species, Brachiaria brizantha (A. Rich) Stapf. cv. Marandu and Megathyrsus maximus Jacq. cv. BRS Mombaça, under different available water capacities. The treatments simulated a long drought period (LDH) equivalent to 10% of the available water capacity (AWC) and simulated 7 (7 DH) and 14 days of drought (14 DH) without water supply. The grasses were evaluated for length and dry weight of shoots and roots. All treatments reached humidity below the permanent wilting point (PWP) and the highest variation in soil moisture was observed at 14 DH, for both grass species. The endophytic fungi promoted an average 15% increase in shoot length (SL) for B. brizantha and an increase of 34% for SL, 266% for Dry Shoot Mass (SDM), and 340% for Dry Root Mass (RDM) for M. maximus treated with P. estuarinum (CML 3699) at 7 DH. Paraconiothyrium estuarinum (CML 3699) guaranteed the highest tolerance to water deficit and sustainable growth performance to both tested grasses.
ISSN:0343-8651
1432-0991
DOI:10.1007/s00284-021-02672-w