Genetic diversity and growth responses of Indonesian tomato (Solanum lycopersicum L.) genotypes under lead stress

Author:

Jadid Nurul1ORCID,Safitri Chusnul Eka1,Jannah Adillatul Lathiifatun1,Muslihatin Wirdhatul1,Purwani Kristanti Indah1,Mas’ud Faisol2

Affiliation:

1. Department of Biology, Institut Teknologi sepuluh Nopember, Surabaya, Indonesia

2. Department of Aquatic Resources Management, Faculty of Fisheries, Islamic University of Lamongan, Indonesia

Abstract

Tomato ( Solanum lycopersicum L.) is cultivated and consumed worldwide, including in Indonesia. It is used in the food, cosmetic, and pharmaceutical industries, due to its high content of carotenoid (lycopene) compounds that have antioxidant and anticancer activities. In Indonesia, although several cultivars of tomato are cultivated, including Opal, Permata, Mutiara, and Rewako , studies on their genetic information are limited. Unpredicted climate change as well as heavy metal contamination, especially Pb pollution, has threatened Indonesian food security. Therefore, our study aimed to analyze the genetic diversity of the four local tomatoes using random amplified polymorphic DNA (RAPD) markers and to determine the growth responses of several local tomato genotypes under Pb stress. In this study, morphological responses to Pb, including plant height and root length were observed. The RAPD analysis showed that Rewako and Permata were distinct, whereas Opal and Mutiara were closely related, possessing 81.8% similarity. Pb stress influenced plant height and root length in the four tomato genotypes, with each genotype exhibiting different morphological responses than others. However, the closely related Mutiara and Opal genotypes demonstrated similar responses to Pb stress to Permata and Rewako. Our study demonstrates that RAPD are sensitive and efficient for elucidating the genomic profile of the tomato genotypes. In addition, our results suggest that genetic variation among tomato genotypes might influence the morphological responses against Pb stress.

Funder

Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia

Publisher

SAGE Publications

Subject

Multidisciplinary

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