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Article

Maize Genotypes Sensitive and Tolerant to Low Phosphorus Levels Exhibit Different Transcriptome Profiles under Talaromyces purpurogenus Symbiosis and Low-Phosphorous Stress

by
Qing Sun
,
Peiyu Zhang
,
Zixuan Zhao
,
Xuefang Sun
,
Xiang Liu
,
Hongsheng Zhang
and
Wen Jiang
*
Shandong Provincial Key Laboratory of Dryland Farming Technology, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2023, 24(15), 11941; https://doi.org/10.3390/ijms241511941
Submission received: 24 June 2023 / Revised: 20 July 2023 / Accepted: 23 July 2023 / Published: 26 July 2023
(This article belongs to the Section Molecular Plant Sciences)
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Abstract

Talaromyces purpurogenus, an endophytic fungus, exhibits beneficial effects on plants during plant–fungus interactions. However, the molecular mechanisms underlying plants’ responses to T. purpurogenus under low-phosphorous (P) stress are not fully understood. In this study, we investigated the transcriptomic changes in maize with low-P-sensitive (31778) and -tolerant (CCM454) genotypes under low-P stress and its symbiotic interaction with T. purpurogenus. Its colonization enhanced plant growth and facilitated P uptake, particularly in 31778. Transcriptome sequencing revealed that 135 DEGs from CCM454 and 389 from 31778 were identified, and that only 6 DEGs were common. This suggested that CCM454 and 31778 exhibited distinct molecular responses to T. purpurogenus inoculation. GO and KEGG analysis revealed that DEGs in 31778 were associated with nicotianamine biosynthesis, organic acid metabolic process, inorganic anion transport, biosynthesis of various secondary metabolites and nitrogen metabolism. In CCM454, DEGs were associated with anthocyanin biosynthesis, diterpenoid biosynthesis and metabolic process. After T. purpurogenus inoculation, the genes associated with phosphate transporter, phosphatase, peroxidase and high-affinity nitrate transporter were upregulated in 31778, whereas AP2-EREBP-transcription factors were detected at significantly higher levels in CCM454. This study provided insights on the molecular mechanisms underlying plant–endophytic fungus symbiosis and low-P stress in maize with low-P-sensitive and -tolerant genotypes.
Keywords: endophytic fungus; maize; genotype; RNA-seq; root–fungus symbiosis endophytic fungus; maize; genotype; RNA-seq; root–fungus symbiosis

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MDPI and ACS Style

Sun, Q.; Zhang, P.; Zhao, Z.; Sun, X.; Liu, X.; Zhang, H.; Jiang, W. Maize Genotypes Sensitive and Tolerant to Low Phosphorus Levels Exhibit Different Transcriptome Profiles under Talaromyces purpurogenus Symbiosis and Low-Phosphorous Stress. Int. J. Mol. Sci. 2023, 24, 11941. https://doi.org/10.3390/ijms241511941

AMA Style

Sun Q, Zhang P, Zhao Z, Sun X, Liu X, Zhang H, Jiang W. Maize Genotypes Sensitive and Tolerant to Low Phosphorus Levels Exhibit Different Transcriptome Profiles under Talaromyces purpurogenus Symbiosis and Low-Phosphorous Stress. International Journal of Molecular Sciences. 2023; 24(15):11941. https://doi.org/10.3390/ijms241511941

Chicago/Turabian Style

Sun, Qing, Peiyu Zhang, Zixuan Zhao, Xuefang Sun, Xiang Liu, Hongsheng Zhang, and Wen Jiang. 2023. "Maize Genotypes Sensitive and Tolerant to Low Phosphorus Levels Exhibit Different Transcriptome Profiles under Talaromyces purpurogenus Symbiosis and Low-Phosphorous Stress" International Journal of Molecular Sciences 24, no. 15: 11941. https://doi.org/10.3390/ijms241511941

APA Style

Sun, Q., Zhang, P., Zhao, Z., Sun, X., Liu, X., Zhang, H., & Jiang, W. (2023). Maize Genotypes Sensitive and Tolerant to Low Phosphorus Levels Exhibit Different Transcriptome Profiles under Talaromyces purpurogenus Symbiosis and Low-Phosphorous Stress. International Journal of Molecular Sciences, 24(15), 11941. https://doi.org/10.3390/ijms241511941

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