meristem

简明释义

英[ˈmerɪˌstem]美[ˈmerɪˌstem]

n. [植] 分生组织；分裂组织

英英释义

单词用法

同义词

反义词

例句

1.The term is used particularly in relation to a part of the apical meristem that later differentiates further.

该名词也用于指随后进一步发育的顶端分生组织。

2.Here, we report the identification of the SUPERNUMERARY BRACT (SNB) gene controlling the transition from spikelet meristem to floral meristem and the floral organ development.

本文我们分离到了一个控制小穗分生组织向花分生组织转变以及花器官发育的基因SUPERNUMERARYBRACT (SNB)。

3.Meristem tip culture of Sweetpotato can obtain virus-free plantlet. Storing the virus-free plantlet in vitro is economic and applicable at present.

由茎尖分生组织培养成无病毒苗并进行试管保存，是当前既经济又实用的方法。

4.The procambium continuously develop to the apex after it arises from the place where the leaf primordia originates from below the apical meristem.

原形成层在顶端分生组织之下叶原基起源的地方发生。

5.The secondary thickening meristem originated from the parenchyma cells, which were located the outside of the atactostele.

次生加厚分生组织起源于正常的散生维管束中柱外侧的薄壁组织细胞。

6.Distinct inductive pathways can activate the expression of flower meristem identity genes, thus cause the transition from shoot apical meristem to flower meristem.

各种开花诱导途径能激活花分生组织特性基因，使茎端分生组织转变为花分生组织。

7.Further, the wheat apical meristem was used to test the possibility of plant direct transformation.

在烟草转化实验基础上，进一步探讨以小麦茎生长点进行植株直接遗传转化的可能性。

8.Scientists study the meristem 分生组织 to understand how plants can regenerate after being damaged.

科学家研究meristem 分生组织以了解植物在受损后如何再生。

9.Researchers are exploring the genetic makeup of meristem 分生组织 to enhance crop yields.

研究人员正在探索meristem 分生组织的遗传构成，以提高作物产量。

10.In tissue culture, a small piece of meristem 分生组织 can be used to grow an entire new plant.

在组织培养中，一小块meristem 分生组织可以用来培养出整株新植物。

11.The apical meristem 分生组织 is crucial for the vertical growth of the plant.

顶端meristem 分生组织对植物的垂直生长至关重要。

12.The plant's growth is largely dependent on the activity of the meristem 分生组织 at the tips of its roots and shoots.

植物的生长在很大程度上依赖于位于根和芽尖的meristem 分生组织的活动。

作文

In the realm of botany, understanding the structure and function of plants is essential. One of the most fascinating aspects of plant biology is the presence of specialized tissues that contribute to growth and development. Among these tissues, the concept of meristem (分生组织) stands out as a critical component in the life cycle of plants. Meristem refers to a group of undifferentiated cells that have the capability to divide and differentiate into various types of plant tissues. This unique characteristic allows plants to grow continuously throughout their lives, unlike many animals that have a fixed growth pattern.There are two primary types of meristem (分生组织): apical meristems and lateral meristems. Apical meristems are found at the tips of roots and shoots, and they are responsible for the vertical growth of the plant. This type of meristem (分生组织) enables plants to reach towards sunlight and anchor deeper into the soil. The cells in apical meristems divide rapidly, producing new cells that elongate and differentiate into various tissues such as leaves, stems, and flowers.On the other hand, lateral meristems, which include the vascular cambium and cork cambium, are responsible for the increase in girth or thickness of the plant. These meristems (分生组织) allow for secondary growth, which is particularly prominent in woody plants. The vascular cambium produces new xylem and phloem cells, facilitating the transport of water and nutrients, while the cork cambium generates protective bark layers. This dual capability of growth not only helps plants to survive but also allows them to adapt to their environments over time.The role of meristem (分生组织) extends beyond mere growth; it is also crucial for the healing and regeneration of plants. When a plant is damaged, the meristem (分生组织) can activate to produce new cells that replace the lost tissues. This regenerative ability is vital for the survival of many plant species, allowing them to recover from environmental stressors such as storms, pests, or diseases.Moreover, the study of meristem (分生组织) has significant implications in agriculture and horticulture. Understanding how these tissues work can lead to advancements in plant breeding and genetic engineering. For instance, scientists can manipulate meristem (分生组织) activity to create disease-resistant varieties or enhance growth rates. Tissue culture techniques often utilize meristem (分生组织) to propagate plants efficiently, ensuring that desired traits are preserved in new generations.In conclusion, the significance of meristem (分生组织) in plant biology cannot be overstated. From facilitating continuous growth and regeneration to its applications in agriculture, meristem (分生组织) plays a fundamental role in the life of plants. As we continue to explore the complexities of plant biology, the understanding of meristem (分生组织) will undoubtedly pave the way for innovations in sustainable practices and food production, highlighting the importance of this remarkable tissue in our ecosystems.

在植物学领域，理解植物的结构和功能至关重要。植物生物学中一个最迷人的方面是存在专门的组织，促进植物的生长和发育。在这些组织中，meristem（分生组织）的概念作为植物生命周期中的关键组成部分脱颖而出。Meristem指的是一组未分化的细胞，这些细胞具有分裂和分化为各种植物组织的能力。这一独特特性使得植物能够在其生命的整个过程中持续生长，这与许多动物有固定生长模式的情况不同。Meristem（分生组织）主要有两种类型：顶端分生组织和侧生分生组织。顶端分生组织位于根和茎的尖端，负责植物的垂直生长。这种类型的meristem（分生组织）使植物能够向阳光伸展并深入土壤。顶端分生组织中的细胞快速分裂，产生新细胞，这些细胞延长并分化为各种组织，如叶、茎和花。另一方面，侧生分生组织，包括维管形成层和皮层形成层，负责植物的粗度或厚度增加。这些meristems（分生组织）允许次生生长，这在木本植物中尤为明显。维管形成层产生新的木质部和韧皮部细胞，促进水分和养分的运输，而皮层形成层则生成保护性的树皮层。这种双重生长能力不仅帮助植物生存，还使它们能够随着时间的推移适应环境。Meristem（分生组织）的作用不仅限于生长；它对于植物的愈合和再生也至关重要。当植物受损时，meristem（分生组织）可以激活，产生替代失去组织的新细胞。这种再生能力对许多植物物种的生存至关重要，使它们能够从风暴、害虫或疾病等环境压力中恢复过来。此外，研究meristem（分生组织）在农业和园艺中具有重要意义。了解这些组织的工作原理可以推动植物育种和基因工程的进步。例如，科学家可以操纵meristem（分生组织）的活动，以创造抗病品种或增强生长速度。组织培养技术通常利用meristem（分生组织）有效繁殖植物，确保所需性状在新一代中得到保留。总之，meristem（分生组织）在植物生物学中的重要性不容小觑。从促进持续生长和再生到在农业中的应用，meristem（分生组织）在植物的生命中发挥着基础作用。随着我们继续探索植物生物学的复杂性，对meristem（分生组织）的理解无疑将为可持续实践和食品生产的创新铺平道路，突显出这一非凡组织在生态系统中的重要性。