Zinc portioning and allocation patterns among various tissues confers variations in Zn use efficiency and bioavailability in lentil genotypes.

Autor:	Rasheed N; Department of Soil Science, University of Agriculture, Faisalabad-Sub Campus Depalpur, Okara, Pakistan., Maqsood MA; Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Faisalabad, Pakistan., Aziz T; Department of Soil Science, University of Agriculture, Faisalabad-Sub Campus Depalpur, Okara, Pakistan., Ashraf MI; Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Faisalabad, Pakistan., Saleem I; Soil Chemistry Section, Ayub Agricultural Research Institute, Faisalabad, Pakistan., Ehsan S; Soil Bacteriology Section, Ayub Agricultural Research Institute, Faisalabad, Pakistan., Nawaz A; Soil Chemistry Section, Ayub Agricultural Research Institute, Faisalabad, Pakistan., Bilal HM; Water Management Research Farm (WMRF), Renala Khurd, Agriculture Department, On Farm Water Management, Punjab, Lahore, Pakistan., Xu M; Shanxi Key Laboratory of Soil Environment and Nutrient Resources, Shanxi Institute of Ecological and Environmental Technology, Shanxi Agricultural University, Taiyuan, China.
Jazyk:	angličtina
Zdroj:	Frontiers in plant science [Front Plant Sci] 2024 Jan 29; Vol. 14, pp. 1325370. Date of Electronic Publication: 2024 Jan 29 (Print Publication: 2023).
DOI:	10.3389/fpls.2023.1325370
Abstrakt:	Zinc (Zn) is essential for plants and animals as it plays significant roles in several physiological and biological processes. Its deficiency in soil results in low Zn content food and is one of the major reasons for Zn malnutrition in humans. Biofortification of crops with zinc (Zn) is a viable approach to combat malnutrition, especially in developing countries. A hydroponic study was executed to study response and Zn partitioning in various lentil genotypes. Eight preselected lentil genotypes (Line-11504, Mansehra-89, Masoor-2006, Masoor-85, Line-10502, Markaz-09, Masoor-2004, and Shiraz-96) were grown in solution culture with two Zn levels (control and adequate Zn). Plants were sown in polythene lined iron trays with a two inch layer of prewashed riverbed sand. After 10 days of germination, seedlings were transplanted to a 25L capacity container with nutrient solution for 15 days, and afterward, these plants were divided into two groups, receiving either 2.0 mM Zn or no Zn levels. Three plants of each genotype were harvested at the vegetative growth stage (60 DAT) and the remaining three at physiological maturity (117 DAT). Plants were partitioned into roots, shoots, and grains at harvest. Significant variations in root and shoot dry matter production, grain output, partitioning of Zn in plant parts (root, shoot, and grain), grain phytate reduction, and Zn bioavailability were observed among genotypes. Lentil root accumulated more Zn (54 mg kg-1) with respect to shoot Zn (51 mg kg-1) under Zn supply. The Zn efficient genotypes (Line-11504 and Mansehra-89) produced more root and shoot dry weights at both harvests. There was a positive correlation between the relative growth rate of root and grain phytate concentration (r = 0.55) and [phytate]:[Zn] ratio (r = 0.67). Zn-efficient genotype Mansehra-89 had a maximum root shoot ratio (0.57) and higher grain Zn (60 mg kg-1) with a respectively reduced grain phytate (17 µg g-1) and thus, had more Zn bioavailability (3.01 mg d-1). The genotypic ability for Zn uptake and accumulation within different plant tissues may be incorporated into future crop breeding to improve the nutrition of undernourished consumers. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision. (Copyright © 2024 Rasheed, Maqsood, Aziz, Ashraf, Saleem, Ehsan, Nawaz, Bilal and Xu.)
Databáze:	MEDLINE
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