Zinc-functionalized thymol nanoemulsion for promoting soybean yield

Sarita Kumari, Ram Chandra Choudhary, R. V. Kumaraswamy, Deepa Bhagat, Ajay Pal, Ramesh Raliya, Pratim Biswas, Vinod Saharan͙

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Herein, we report zinc-functionalized thymol nanoemulsion (Zn-TNE) by sonication method and its characterization by DLS, HR-TEM, FEG-SEM-EDS, Cryo-FESEM, FTIR and AAS studies. Zn-TNE treated seeds bestowed better seedling vigor index and higher activities of seed stored food mobilizing enzymes (α-amylase and protease). Foliar application of Zn-TNE (0.01–0.06%, v/v) enhanced defense-antioxidant enzymes activities, balanced reactive oxygen species, induced higher content of chlorophyll-a, b and higher lignin deposition in soybean plants. In the field, Zn-TNE application (0.02–0.06%, v/v) significantly controlled bacterial pustule disease (PEDC value 28–79%) and increased grain yield up to 16.6% as compared with bulk thymol application and up to 50% from control. Disease control and higher yield in soybean could be explained by diverse bioactivities of Zn-TNE in maintaining cellular homeostasis of soybean plants. Study shows that Zn-TNE can further be maneuvered for slow delivery of other micronutrients for higher crop yield.

Original languageEnglish (US)
Pages (from-to)64-74
Number of pages11
JournalPlant Physiology and Biochemistry
StatePublished - Dec 2019
Externally publishedYes


  • Nanoemulsion
  • Saponin
  • Sonication
  • Soybean
  • Thymol
  • Zinc

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science


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