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Physiological Characteristics, Phytase Activity, and Mineral Bioavailability of a Low-Phytate Soybean Line during Germination
Plant Foods for Human Nutrition ( IF 4 ) Pub Date : 2020-05-21 , DOI: 10.1007/s11130-020-00827-x Qin Dong 1 , Hirofumi Saneoka 1
Plant Foods for Human Nutrition ( IF 4 ) Pub Date : 2020-05-21 , DOI: 10.1007/s11130-020-00827-x Qin Dong 1 , Hirofumi Saneoka 1
Affiliation
Phytate is a storage form of phosphorus (P) in seeds and, when degraded, plays a vital role in seed germination. Low phytate content in grain seeds inhibits germination and seedling growth. Here, Low-phytate (LP) and normal-phytate (NP) soybean lines were grown in vermiculite to determine whether germination was affected by low phytate content. Growth, phytase activity, mineral concentration, and mineral extractability from the seedlings of NP and LP soybean lines were evaluated. Seedling growth did not differ significantly between NP and LP lines. Phytase and specific phytase activities at 11 days to 17 days after sowing were 1.3 to 2.6 folds greater in the NP line than in the LP line. The LP line hydrolyzed all the phytate 2 days earlier than the NP line. The concentration and extractability of minerals changed over time during germination, and the LP line had higher molar ratios of phytic acid to Ca, Mg, and K than the NP line. These results suggest that germination and growth of the seedlings are not affected by low phytate levels in seeds. We suggest that the LP line benefits from higher bioavailability of P and macro-minerals unlike the NP line.
中文翻译:
低植酸大豆品系在萌发期间的生理特征、植酸酶活性和矿物质生物利用度
植酸盐是种子中磷 (P) 的一种储存形式,降解后在种子萌发中起着至关重要的作用。谷物种子中的低植酸含量会抑制发芽和幼苗生长。在这里,低植酸盐 (LP) 和正常植酸盐 (NP) 大豆品系在蛭石中生长,以确定萌发是否受到低植酸盐含量的影响。评估了 NP 和 LP 大豆品系幼苗的生长、植酸酶活性、矿物质浓度和矿物质可提取性。NP 和 LP 系之间的幼苗生长没有显着差异。播种后 11 天至 17 天的植酸酶和特定植酸酶活性在 NP 系中比在 LP 系中高 1.3 至 2.6 倍。LP 系比 NP 系早 2 天水解所有植酸盐。矿物的浓度和可提取性在发芽过程中随时间变化,LP 系比 NP 系具有更高的植酸与 Ca、Mg 和 K 的摩尔比。这些结果表明幼苗的发芽和生长不受种子中低植酸水平的影响。我们建议与 NP 线不同,LP 线受益于 P 和大量矿物质的更高生物利用度。
更新日期:2020-05-21
中文翻译:
低植酸大豆品系在萌发期间的生理特征、植酸酶活性和矿物质生物利用度
植酸盐是种子中磷 (P) 的一种储存形式,降解后在种子萌发中起着至关重要的作用。谷物种子中的低植酸含量会抑制发芽和幼苗生长。在这里,低植酸盐 (LP) 和正常植酸盐 (NP) 大豆品系在蛭石中生长,以确定萌发是否受到低植酸盐含量的影响。评估了 NP 和 LP 大豆品系幼苗的生长、植酸酶活性、矿物质浓度和矿物质可提取性。NP 和 LP 系之间的幼苗生长没有显着差异。播种后 11 天至 17 天的植酸酶和特定植酸酶活性在 NP 系中比在 LP 系中高 1.3 至 2.6 倍。LP 系比 NP 系早 2 天水解所有植酸盐。矿物的浓度和可提取性在发芽过程中随时间变化,LP 系比 NP 系具有更高的植酸与 Ca、Mg 和 K 的摩尔比。这些结果表明幼苗的发芽和生长不受种子中低植酸水平的影响。我们建议与 NP 线不同,LP 线受益于 P 和大量矿物质的更高生物利用度。