Systemic Uptake of Fluorescent Tracers by Soybean ( Glycine max (L.) Merr.) Seed and Seedlings

Zhen Wang, Masoume Amirkhani, Suemar A.G. Avelar, Daibin Yang and Alan G. Taylor
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Zhen Wang: Horticulture Section, School of Integrative plant Science, Cornell AgriTech, Cornell University, Geneva, New York, NY 14456, USA
Masoume Amirkhani: Horticulture Section, School of Integrative plant Science, Cornell AgriTech, Cornell University, Geneva, New York, NY 14456, USA
Suemar A.G. Avelar: Seed Analysis Laboratory of APROSMAT–Mato Grosso Seed Grower Association–APROSMAT Rua dos Andradas, Rua dos Andradas, Rondonópolis 688, Brazil
Daibin Yang: Institute of Plant Protection, Chinese Academy of Agricultural Science, Beijing 100193, China
Alan G. Taylor: Horticulture Section, School of Integrative plant Science, Cornell AgriTech, Cornell University, Geneva, New York, NY 14456, USA

Agriculture, 2020, vol. 10, issue 6, 1-13

Abstract: Systemic seed treatment uptake was investigated in seeds and seedlings using fluorescent tracers to mimic systemic agrochemicals. Soybean was used as the model as soybean has the permeable seed coat characteristic to both charged and noncharged molecules. The purpose of the paper is to (1) screen 32 fluorescent tracers and then use optimal tracers for seed and seedling uptake, (2) investigate varietal differences in seed uptake, (3) examine the distribution of tracer uptake into 14-day-old seedlings, and (4) study the relationship between seed treatment lipophilicity, measured as log P on seed and root uptake. The major chemical families that displayed both seed and seedling uptake were coumarins and xanthenes. Seed uptake of coumarin 120 ranged from 1.1% to 4.8% of the applied seed treatment tracer from 15 yellow-seeded varieties. Rhodamine B, a xanthene compound uptake in seedlings, showed translocation from the applied seed treatment to all seedling tissues. Most of the tracer was measured in the hypocotyl and root, with lesser amounts in the epicotyl and true leaves. Log P is well documented in the literature to model systemic uptake by roots, but log P of the tracers were not related to seed uptake.

Keywords: fluorescent tracer; systemic uptake; soybean; in vivo imaging system (IVIS) (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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