Effects of Light Orientation and Mechanical Damage to Leaves on Isoflavone Accumulation in Soybean Seeds
| Autor: | Mohamed Hewidy, Anna Panozzo, Teofilo Vamerali, Giuseppe Barion, Andrea Aloia |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
food.ingredient Leaf damage light orientation Carbon sequestration Biology 01 natural sciences agroforestry soybean isoflavones mechanical stress lcsh:Agriculture chemistry.chemical_compound Nutraceutical food lcsh:S food and beverages 04 agricultural and veterinary sciences Isoflavones Horticulture chemistry Shoot 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Shading Agronomy and Crop Science Cotyledon 010606 plant biology & botany |
| Zdroj: | Agronomy Volume 11 Issue 3 Agronomy, Vol 11, Iss 589, p 589 (2021) |
| ISSN: | 2073-4395 |
| DOI: | 10.3390/agronomy11030589 |
| Popis: | Soybean is largely cultivated worldwide providing high amounts of proteins and oil for food and feed, and isoflavones for nutraceutical uses. The increasing interest in agroforestry practices for improving carbon sequestration and mitigating climate changes suggests the need to assess soybean response to variations of light availability and direction. A two-year pot trial was carried out at Legnaro (NE Italy) in order to mimic the response of the soybean var. Sponsor to contrasting light orientation (east or west) by artificial shading, associated or not with mechanical leaf damage, in terms of protein accumulation, total cotyledon isoflavone concentration (TCIC) and isoflavone profile. Here, we demonstrate that a different intensity of the isoflavone metabolism exists in response to lighting conditions, with higher TCIC and slightly increased seed crude proteins in plants lighted from the east (morning time) and after mechanical leaf damage. The isoflavone profile was not changed, but low temperatures and high rainfall during seed filling (1st year) were associated with increased accumulation of medium-high molecular weight (MW) forms (i.e., glycosyls and malonyls), while high temperatures and low rainfall (2nd year) with increased accumulation of medium-low MW forms (i.e., glycosyls and aglycones). It is concluded that within agroforestry systems, there is possibly a large scope for maximizing isoflavone accumulation by selecting the harvesting area in the neighboring of the east side of the tree alleys, with further improvements if a mild shoot stripping is applied before flowering. |
| Databáze: | OpenAIRE |
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