不同树龄红豆杉针叶中蛋白质、氨基酸和碳水化合物含量的性别和季节相关变异

IF 0.8 4区 生物学 Q4 PLANT SCIENCES Biologia Plantarum Pub Date : 2022-12-22 DOI:10.32615/bp.2022.034
M. Zarek
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引用次数: 0

摘要

本研究旨在确定雄性和雌性欧洲红豆杉(Taxus baccata L.)树木的针叶在基本化合物(蛋白质、氨基酸和碳水化合物)含量上是否存在差异,以及观察到的差异是否仅由性别因素引起,还是也与针叶的年龄和季节有关。这项研究是在三个季节从克拉科夫雅盖隆大学植物园收集的雄性和雌性欧洲紫杉标本上进行的。雄株的不溶性碳水化合物含量显著高于雌株。在针叶生长的第一年,干质量和可溶性碳水化合物含量显著增加。第3年时,氨基酸含量显著升高,可溶性蛋白质含量显著降低。可溶性碳水化合物和氨基酸含量在单月性别间差异最大,可溶性蛋白质含量差异最小。新针叶的生长似乎至少有一部分是由旧针叶的碳水化合物再活化维持的。综上所述,雄性和雌性红豆杉在新陈代谢方面存在差异。这些性别差异可能随着针头的年龄而变化。因此,不同年龄的针样不宜混用,采样时间应慎重选择。对于1年生的针叶,一个潜在的有趣的性别标志可能是6月和7月游离氨基酸含量增加,1月可溶性碳水化合物含量高,而对于2年生的针叶,雄性个体的游离氨基酸含量从9月开始增加。3月似乎是一个有趣的月份,因为在本研究中所研究的所有生化特征中,它显示出性别之间的显著差异。
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Gender- and season-related variability in the content of proteins, amino acids, and carbohydrates in Taxus baccata needles of different age
The present study aimed to determine if the needles of male and female European yew ( Taxus baccata L.) trees differ in their content of basic compounds (proteins, amino acids, and carbohydrates), and whether the observed differences result only from the gender factor or if they are also associated with the needles’ age and season. The study was conducted on male and female European yew specimens, collected from the Botanical Garden of the Jagiellonian University in Krakow during three seasons. Male specimens had significantly higher content of insoluble carbohydrates compared to the females ones. In the first year of the needles life, the dry mass and content of soluble carbohydrates increased significantly. In the third year of the needles’ life, the content of amino acids increased significantly and the content of soluble proteins decreased. The highest differences between the genders in the individual months were observed in the soluble carbohydrates and amino acids amounts and the least in the soluble proteins. The growth of the new needles seems to be at least partly sustained by carbohydrates remobilization from the older needles. In conclusion, male and female yews differ in their metabolism. These gender differences may vary with the needles’ age. For this reason, the needle samples of different age should not be mixed, and the sampling time should be chosen carefully. For one-year-old needles, a potentially interesting gender marker may be an increased content of free amino acids in June and July, and high content of soluble carbohydrates in January, while for two-year-old needles, an increased content of free amino acids in male individuals from September. March seems to be an interesting month, as it shows significant differences between the genders in terms of all biochemical fe atures studied in this research.
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来源期刊
Biologia Plantarum
Biologia Plantarum 生物-植物科学
CiteScore
2.80
自引率
0.00%
发文量
28
审稿时长
3.3 months
期刊介绍: BIOLOGIA PLANTARUM is an international journal for experimental botany. It publishes original scientific papers and brief communications, reviews on specialized topics, and book reviews in plant physiology, plant biochemistry and biophysics, physiological anatomy, ecophysiology, genetics, molecular biology, cell biology, evolution, and pathophysiology. All papers should contribute substantially to the current level of plant science and combine originality with a potential general interest. The journal focuses on model and crop plants, as well as on under-investigated species.
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