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A double-edged effect of manganese-doped graphene quantum dots on salt-stressed Capsicum annuum L. by Yuqing Ye; Elizabeth Noriega Landa; Jesus M. Cantu; Jose A. Hernandez-Viezcas; Aruna Narayanan Nair; Wen-Yee Lee; Sreeprasad T. Sreenivasan; Jorge L. Gardea-Torresdey is a Environmental Science article available to read on EtoBox.

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The objective of the current study is to evaluate both the positive and negative effects of manganese-doped graphene quantum dots (GQD-Mn) on Capsicum annuum L. grown under salt stress. GQD-Mn was synthesized, characterized, and foliar-applied (250 mg/L, 120 mg/L, 60 mg/L) to C. annuum L. before and after the flowering stage, during which 100 mM of NaCl solution was introduced into the soil as salt stress. Controls were designed as absolute control (no nanomaterials or salt) and negative control (no nanomaterials only salt). Herein, we report that GQD-Mn offset the reduction of fruit production in salt-stressed C. annuum L. by around 40 %. However, based on a comprehensive analysis of normal alkanes (n-alkane) using gas chromatography-mass spectrometry (GC-MS), we also observed that the leaf epicuticular wax profile was disturbed by GQD-Mn, as the concentration of long-chain n-alkanes was increased. Meanwhile, the content of magnesium (Mg) and zinc (Zn) indicated a potential promoted photosynthesis activity in C. annuum L leaves. We hypothesize that the optical properties of GQD-Mn allow leaves to utilize light more efficiently, thus improving photosynthetic activities in plants to

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Author

Yuqing Ye; Elizabeth Noriega Landa; Jesus M. Cantu; Jose A. Hernandez-Viezcas; Aruna Narayanan Nair; Wen-Yee Lee; Sreeprasad T. Sreenivasan; Jorge L. Gardea-Torresdey

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)