1
|
Osman SOM, Saad ASI, Tadano S, Takeda Y, Konaka T, Yamasaki Y, Tahir ISA, Tsujimoto H, Akashi K. Chemical Fingerprinting of Heat Stress Responses in the Leaves of Common Wheat by Fourier Transform Infrared Spectroscopy. Int J Mol Sci 2022; 23:2842. [PMID: 35269984 PMCID: PMC8911002 DOI: 10.3390/ijms23052842] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/01/2022] [Accepted: 03/03/2022] [Indexed: 02/05/2023] Open
Abstract
Wheat (Triticum aestivum L.) is known to be negatively affected by heat stress, and its production is threatened by global warming, particularly in arid regions. Thus, efforts to better understand the molecular responses of wheat to heat stress are required. In the present study, Fourier transform infrared (FTIR) spectroscopy, coupled with chemometrics, was applied to develop a protocol that monitors chemical changes in common wheat under heat stress. Wheat plants at the three-leaf stage were subjected to heat stress at a 42 °C daily maximum temperature for 3 days, and this led to delayed growth in comparison to that of the control. Measurement of FTIR spectra and their principal component analysis showed partially overlapping features between heat-stressed and control leaves. In contrast, supervised machine learning through linear discriminant analysis (LDA) of the spectra demonstrated clear discrimination of heat-stressed leaves from the controls. Analysis of LDA loading suggested that several wavenumbers in the fingerprinting region (400-1800 cm-1) contributed significantly to their discrimination. Novel spectrum-based biomarkers were developed using these discriminative wavenumbers that enabled the successful diagnosis of heat-stressed leaves. Overall, these observations demonstrate the versatility of FTIR-based chemical fingerprints for use in heat-stress profiling in wheat.
Collapse
Affiliation(s)
- Salma O. M. Osman
- United Graduate School of Agricultural Sciences, Tottori University, 4-101 Koyama-Cho-Minami, Tottori 680-0945, Japan; (S.O.M.O.); (S.T.); (T.K.)
- Agricultural Research Corporation, Wad Medani P.O. Box 126, Sudan; (A.S.I.S.); (I.S.A.T.)
| | - Abu Sefyan I. Saad
- Agricultural Research Corporation, Wad Medani P.O. Box 126, Sudan; (A.S.I.S.); (I.S.A.T.)
| | - Shota Tadano
- United Graduate School of Agricultural Sciences, Tottori University, 4-101 Koyama-Cho-Minami, Tottori 680-0945, Japan; (S.O.M.O.); (S.T.); (T.K.)
| | - Yoshiki Takeda
- Faculty of Agriculture, Tottori University, 4-101 Koyama-Chou-Minami, Tottori 680-0945, Japan;
| | - Takafumi Konaka
- United Graduate School of Agricultural Sciences, Tottori University, 4-101 Koyama-Cho-Minami, Tottori 680-0945, Japan; (S.O.M.O.); (S.T.); (T.K.)
| | - Yuji Yamasaki
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan; (Y.Y.); (H.T.)
| | - Izzat S. A. Tahir
- Agricultural Research Corporation, Wad Medani P.O. Box 126, Sudan; (A.S.I.S.); (I.S.A.T.)
| | - Hisashi Tsujimoto
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan; (Y.Y.); (H.T.)
| | - Kinya Akashi
- United Graduate School of Agricultural Sciences, Tottori University, 4-101 Koyama-Cho-Minami, Tottori 680-0945, Japan; (S.O.M.O.); (S.T.); (T.K.)
- Faculty of Agriculture, Tottori University, 4-101 Koyama-Chou-Minami, Tottori 680-0945, Japan;
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan; (Y.Y.); (H.T.)
| |
Collapse
|