Ultraviolet-B radiation can result in deleterious effects on many plant growth processes. In clonal plants, resources and hormones are often shared between connected ramets to deal with various environments. However, little is known about whether and how clonal integration influences the ability of clonal plants to respond to UV-B radiation. In this paper, ramet pairs of Duchesnea indica were either connected by stolons or disconnected by stolon interruption. One of the ramet in the pair was exposed to elevated UV-B radiation. Water transport rate and several growth, photosynthetic and biochemical parameters were measured. When ramets were connected and exposed to heterogeneous UV-B radiation, the velocity of water transportation from the UV-B treated ramet to its connected sister ramet was markedly lower. Moreover, stolon connection resulted in an increase of biomass and ramet number in the UV-B stressed part of the clonal fragments at the expense of that in the UV-B unstressed part. In addition, the contents of chlorophylls and UV-B absorbing compounds were shared between connected ramets under heterogeneous UV-B radiation. Gas exchange and chlorophyll fluorescence parameters of the UV-B stressed ramets were impaired by supplemental UV-B radiation in Duchesnea indica . Clonal integration significantly reduced the stressful impact imposed by enhanced UV-B radiation at a cost to the whole clone.

中文翻译：

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生理整合改善了无性系药草 Duchesnea indica 中 UV-B 辐射的影响

紫外线-B 辐射会对许多植物生长过程产生有害影响。在克隆植物中，资源和激素通常在相连的分株之间共享，以应对各种环境。然而，关于克隆整合是否以及如何影响克隆植物对 UV-B 辐射的反应能力知之甚少。在本文中，Duchesnea indica 的分株对要么被匍匐茎连接，要么被匍匐茎中断断开。一对中的一个分株暴露在高强度的 UV-B 辐射下。测量了水传输速率和几个生长、光合作用和生化参数。当分株连接并暴露于异质 UV-B 辐射时，从 UV-B 处理的分株到其连接的姐妹分株的水传输速度显着降低。而且，匍匐茎连接导致克隆片段 UV-B 胁迫部分的生物量和分株数增加，但代价是 UV-B 未胁迫部分的生物量和分株数增加。此外，在异质 UV-B 辐射下，连接的分株之间共享叶绿素和 UV-B 吸收化合物的含量。在 Duchesnea indica 中补充 UV-B 辐射会损害 UV-B 压力分株的气体交换和叶绿素荧光参数。克隆整合显着减少了增强的 UV-B 辐射带来的压力影响，但整个克隆都付出了代价。在异质 UV-B 辐射下，连接的分株之间共享叶绿素和 UV-B 吸收化合物的含量。在 Duchesnea indica 中补充 UV-B 辐射会损害 UV-B 压力分株的气体交换和叶绿素荧光参数。克隆整合显着减少了增强的 UV-B 辐射带来的压力影响，但整个克隆都付出了代价。在异质 UV-B 辐射下，连接的分株之间共享叶绿素和 UV-B 吸收化合物的含量。在 Duchesnea indica 中补充 UV-B 辐射会损害 UV-B 压力分株的气体交换和叶绿素荧光参数。克隆整合显着减少了增强的 UV-B 辐射带来的压力影响，但整个克隆都付出了代价。