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Growth-promoting bioactivities of Bipolaris sp. CSL-1 isolated from Cannabis sativa suggest a distinctive role in modifying host plant phenotypic plasticity and functions

  • Lubna
  • Sajjad Asaf
  • Abdul Latif Khan
  • Muhammad Waqas
  • Sang-Mo Kang
  • Muhammad Hamayun
  • In-Jung LeeEmail author
  • Anwar HussainEmail author
Original Article
  • 57 Downloads

Abstract

Endophytic fungi have been considered as strong plant growth promoters due to phytohormones production. The current study reports the isolation of endophytic fungi from bio-prospective medicinal plant cannabis sativa. Endophytic fungus Bipolaris sp. CSL-1 from the leaves of C. sativa was isolated. Culture filtrate (CF) was primarily investigated for indole-3-acetic acid (IAA) and gibberellins (GAs) and was further evaluated for its capability to enhance mutant Waito-C rice growth attributes. A variety of plant growth characteristics, including seedling length, seedling biomass, and chlorophyll content, were significantly promoted by the CF, and the growth-promoting effect was due to IAA and various GAs in the CF. Gas chromatography/mass spectrometry analysis revealed the quantities (ng/mL) of various GAs, including GA1 (0.758 ± 0.005), GA3 (0.00015 ± 0.005), GA4 (0.945 ± 0.081), GA7 (0.6382 ± 0.012), GA9 (0.0125 ± 0.0002), and GA24 (0.0139 ± 0.0013). Similarly, endogenous GA4 (33.243 ± 4.36), GA24 (29.64 ± 2.68), GA7 (22.5 ± 1.3), and GA12 (25.21 ± 2.8) were significantly upregulated in rice mutant after CF application. Furthermore, RT-PCR indicated that IAA and GA pathway genes (des, ggs2, P50-1, P450-4, and iaaH) were expressed in CSL-1 and the combined application of CSL-1 spore suspension with yucasin and uniconazole to maize seedlings revealed that CSL-1 such as exogenous GA3 and IAA alleviated the negative effect of uniconazole and yucasin and promoted maize-seedling growth. These findings suggest that the endophytic fungus CSL-1, which produces IAA and GAs, can play a vital role in promoting plant growth and that CSL-1 could be used to enhance crop growth and mitigate plant stress under a variety of environmental conditions.

Keywords

Endophytic fungus Bipolaris sp. CSL-1 Indole-3-acetic acid Gibberellin Waito-C rice 

Notes

Funding

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1D1A1B04035601).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków 2019

Authors and Affiliations

  • Lubna
    • 1
  • Sajjad Asaf
    • 2
  • Abdul Latif Khan
    • 2
  • Muhammad Waqas
    • 3
  • Sang-Mo Kang
    • 4
  • Muhammad Hamayun
    • 1
  • In-Jung Lee
    • 4
    Email author
  • Anwar Hussain
    • 1
    Email author
  1. 1.Department of Botany, Garden CampusAbdul Wali Khan University MardanMardanPakistan
  2. 2.Natural and Medical Science Research CenterUniversity of NizwaNizwaOman
  3. 3.Department of Agriculture ExtensionGovernment of Khyber PakhtunkhwaBunerPakistan
  4. 4.Crop Physiology Laboratory, School of Applied BiosciencesKyungpook National UniversityDaeguRepublic of Korea

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