What question did this study set out to answer?

The aim is to explore how strigolactone and dopamine can reduce selenium stress and promote growth in grapevines.

March 10, 20260 citationsOpen Access

Alleviating Selenite Stress in Grapevines Through Strigolactone and Dopamine-Induced Growth and Selenium Uptake

ZFZhonghan FanSichuan Agricultural University FWFei WangSichuan Agricultural University JZJing ZhangSichuan Agricultural University

Key Points

The aim is to explore how strigolactone and dopamine can reduce selenium stress and promote growth in grapevines.
Grapevines exposed to selenite stress (0.5 mg/L) and treated with GR24 (1 µmol/L) and dopamine (100 µmol/L)
Growth parameters, photosynthetic capacity, and biochemical contents were measured
Peroxidase activity and selenium content were assessed
Both GR24 and dopamine increased growth and photosynthetic capacity under selenium stress
GR24 reduced root and shoot selenium content by 4.63% and 25.04%, respectively
Dopamine decreased root selenium content by 7.49% but had no significant effect on shoot selenium
GR24 decreased the translocation factor, while dopamine increased it under selenium stress

Abstract

To alleviate selenium (Se) stress in grapes, we investigated the effects of the strigolactone analog GR24 (1 μmol/L) and dopamine (DA, 100 μmol/L) on the growth and Se uptake of grapevines under selenite stress (0.5 mg/L). Se treatment inhibited grapevine growth, indicating that Se induced stress in grapevines. Under Se stress, both GR24 and DA treatments increased growth parameters and photosynthetic capacity. In addition, they enhanced peroxidase activity, soluble protein content, and soluble sugar content. Furthermore, both GR24 and DA treatments reduced Se content in grapevines. Compared to Se treatment, GR24 reduced root and shoot Se contents by 4.63% and 25.04%, respectively, while DA decreased root Se content by 7.49% but did not significantly affect shoot Se content. Regarding the translocation factor, GR24 treatment decreased this value, while DA treatment increased it under Se stress. In summary, both GR24 and DA treatments can alleviate selenite stress, promote growth, and exhibit potential in reducing Se uptake in grapevines.

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