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Abstract <p>14 nM wheat germ agglutinin (WGA) can stimulate the growth of endophytic bacteria <i>Bacillus subtilis</i> 10-4 (<i>B.s.</i>). The pre-sowing treatment of wheat (<i>Triticum aestivum</i> L.) seeds with (14 nM WGA + <i>B.s.</i>) composition caused the growth stimulation of 7-day-old plants, increased the contents of total chlorophyll (Chl), Chl <i>b</i>, and carotenoids as compared to control and 14 nM WGA, 28 nM WGA, <i>B. subtilis</i>, (28 nM WGA + <i>B.s.</i>) treatments. (14 nM WGA + <i>B.s.</i>) seed pretreatment decreased the undissipated light energy parameter (Y(NO)), but significantly increased the coefficients of nonphotochemical quenching (NPQ), minimum fluorescence efficiency (<i>F</i><sub>v</sub>/<i>F</i><sub>0</sub>), maximum (<i>F</i><sub>m</sub>), and maximum variable (<i>F</i><sub>v</sub>) fluorescence of leaves of wheat seedlings as compared to other studied treatments. After (14 nM WGA + <i>B.s.</i>) pretreatment, wheat leaves had high parameters of the minimum fluorescence (<i>F</i><sub>0</sub>), the actual photochemical efficiency of photosystem II (Ф<sub>PSII</sub>), and relative fluorescence decrease (Rfd) in comparison to control. The (14 nM WGA + <i>B.s.</i>)-induced enhancement of transpiration intensity and relative water content was not due to the increase of osmotic potential of cell sap, but owing to lignin accumulation in vascular cylinder of wheat roots.</p>

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Collaborative Impact of Wheat Germ Agglutinin and Bacillus subtilis on Growth, Water Balance, Photosynthetic Traits, Lignification and Suberinization of Wheat Seedlings

  • 期刊论文

  • 发表日期：

    2025年6月17日

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  • A. R. Lubyanova

摘要

Abstract

14 nM wheat germ agglutinin (WGA) can stimulate the growth of endophytic bacteria Bacillus subtilis 10-4 (B.s.). The pre-sowing treatment of wheat (Triticum aestivum L.) seeds with (14 nM WGA + B.s.) composition caused the growth stimulation of 7-day-old plants, increased the contents of total chlorophyll (Chl), Chl b, and carotenoids as compared to control and 14 nM WGA, 28 nM WGA, B. subtilis, (28 nM WGA + B.s.) treatments. (14 nM WGA + B.s.) seed pretreatment decreased the undissipated light energy parameter (Y(NO)), but significantly increased the coefficients of nonphotochemical quenching (NPQ), minimum fluorescence efficiency (Fv/F0), maximum (Fm), and maximum variable (Fv) fluorescence of leaves of wheat seedlings as compared to other studied treatments. After (14 nM WGA + B.s.) pretreatment, wheat leaves had high parameters of the minimum fluorescence (F0), the actual photochemical efficiency of photosystem II (ФPSII), and relative fluorescence decrease (Rfd) in comparison to control. The (14 nM WGA + B.s.)-induced enhancement of transpiration intensity and relative water content was not due to the increase of osmotic potential of cell sap, but owing to lignin accumulation in vascular cylinder of wheat roots.