外源细菌群体感应信号分子/信使N-己酰基-L-羟基丝氨酸内酯(C-HSL)对粗壮栎和红色栎橡子萌发和植株生长的影响

I. Kosakivska, V. Vasyuk, L. Voytenko, M. Shcherbatiuk, L. Babenko, K. O. Romanenko
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引用次数: 2

摘要

在室内条件下,研究了N-己酰基-L-羟基丝氨酸内酯(C6-HSL)溶液(300mg/L)预播引发对粗壮栎和红色栎橡子发芽及形态酚学特性的影响。引发后,93.4%的粗壮栎橡子发芽,超过对照32.2%,而红色栎橡子的发芽数量在误差范围内比对照增加了5%,达到90%。根据形态特征,将47天龄的粗壮木植物分为发芽橡子、芽和幼叶苗,而在红色木植物中,选择芽和真叶苗。仅在用C6-HSL引发的样品中检测到一组具有幼叶的植物。启动诱导了两个物种子叶生物量的差异变化,并加速了粗壮木幼苗的养分利用。我们观察到对粗壮Q.植物的生长和生物量积累有积极影响,除第三组植物外,对红色Q.植物有消极影响。粗壮Q.幼苗根干重和红色Q.芽干重分别增加103%和153%。用C6-HSL溶液引发橡子,可使橡子叶片的数量、长度、生物量和总面积增加。这些变化在红曲霉幼苗中更为明显。两个物种的根系结构都发生了变化,形成了大量额外的侧根。因此,用C6-HSL溶液引发可以激活橡子的发芽,刺激粗壮木植物的生长,并减缓红色木植物的增长。外源C6-HSL并不能消除两个研究品种幼苗不友好的综合征,但提高了橡子的活力,增加了幼苗的数量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of exogenous bacterial quorum-sensing signal molecule/messenger N-hexanoyl-L-homoserine lactone (C-HSL) on acorn germination and plant growth of Quercus robur and Q. rubra (Fagaceae)
The effect of pre-sowing priming with N-hexanoyl-L-homoserine lactone (C6-HSL) solution (300 mg/L) on acorn germination and morpho-phenological characteristics of Quercus robur and Q. rubra was studied under laboratory conditions. After priming, 93.4% of Q. robur acorns germinated that exceeded the control by 32.2%, while the number of sprouted acorns of Q. rubra increased within error limits by 5% more than the control and amounted to 90%. According to morphological characteristics, the 47-day-old plants of Q. robur were divided into the following groups: germinated acorns, sprouts and seedlings with juvenile leaves, whereas among the plants of Q. rubra, sprouts and seedlings with true leaves were selected. A group of plants with juvenile leaves was detected only in the samples primed with C6-HSL. Priming induced differential changes in cotyledon biomass of both species and accelerated nutrient utilization by Q. robur seedlings. We observed a positive effect on the growth and biomass accumulation of Q. robur plants and a negative effect, except for plants of the third group, on those of Q. rubra. The dry weight of seedling roots of Q. robur and shoots of Q. rubra increased, respectively, by 103% and 153%. Priming of acorns with C6-HSL solution induced an increase in number, length, biomass and total area of leaves. These changes were more pronounced in Q. rubra seedlings. Alterations in the root system architecture towards formation of numerous additional lateral roots were recorded for both species. Thus, priming with C6-HSL solution activated acorn germination and stimulated growth of Q. robur plants and decelerated growth of plants of Q. rubra. Exogenous C6-HSL did not eliminate the syndrome of unfriendly seedlings of both studied oak species, but improved the viability of acorns and increased the number of seedlings.
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