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Importance of the lignin content in the pod wall and seed coat on soybean seed physiological and health performances

The effects of lignin on soybean seed quality have been studied since the early 1990s. Initially, higher lignin content in the seed coat was associated with greater resistance to mechanical damage by the seeds. Later, positive relationships of lignin content in the seed coat were associated with tol...

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Bibliographic Details
Published in:Journal of seed science 2023, Vol.45
Main Authors: Krzyzanowski, Francisco Carlos, França-Neto, José de Barros, Henning, Fernando Augusto
Format: Article
Language:English
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Summary:The effects of lignin on soybean seed quality have been studied since the early 1990s. Initially, higher lignin content in the seed coat was associated with greater resistance to mechanical damage by the seeds. Later, positive relationships of lignin content in the seed coat were associated with tolerance to stresses caused by weathering in pre-harvest, resulting in improved seed quality. Additional studies have shown that higher lignin content in the pod wall of soybean is also related to production of seeds with high physiological and sanitary qualities. Colored soybean seeds (black or brown) are known to have higher seed quality due to higher lignin content in the seed coat; in addition, the presence of anthocyanin in the seed coat of colored seeds also contributes to improve seed quality. Finally, the effects of boron on lignin synthesis are also highlighted in this review article. As demonstrated in this review article, lignin content in the seed coat and pod wall of soybean plays an important role in relation to physical, health, and physiological seed qualities. These parameters should be considered in studies related to evaluation of the quality of soybean seeds as affected by genetic factors. These parameters should also be strongly considered for inclusion in breeding programs to improve soybean seed and grain quality. Resumo: Os efeitos da lignina na qualidade da semente de soja vêm sendo estudados desde os primeiros anos da década de 1990. Inicialmente, verificou-se que maiores teores de lignina no tegumento da semente estavam associados a maior resistência a danos mecânicos pelas sementes. Posteriormente, relações positivas do teor de lignina no tegumento das sementes foram associadas à tolerância aos estresses causados pelo intemperismo na fase de pré-colheita, resultando em melhor qualidade das sementes. Estudos adicionais mostraram que maiores teores de lignina na parede da vagem da soja também estão relacionados à produção de sementes com altas qualidades fisiológicas e sanitárias. Sementes de soja coloridas (pretas ou marrons) são conhecidas por possuírem sementes de maior qualidade devido ao maior teor de lignina no tegumento; além disso, a presença de antocianina nos tegumentos das sementes coloridas também contribui para a melhoria da qualidade das sementes. Finalmente, os efeitos do boro na síntese de lignina também são destacados neste artigo de revisão. Conforme demonstrado neste artigo de revisão, o teor de lignina no tegumento e n
ISSN:2317-1537
2317-1545
2317-1545
DOI:10.1590/2317-1545v45268562