Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong 266071, China.
Evid Based Complement Alternat Med. 2011;2011:658906. doi: 10.1155/2011/658906. Epub 2011 Aug 10.
Epiphytic filamentous algae (EFA) were noted as a serious problem to reduce the production and quality of K. alvarezii. The morphological studies revealed that the main epiphyte on K. alvarezii was Neosiphonia savatieri in China. Though the harmful effects of EFA on the production of K. alvarezii have been reported, the detailed mechanism of the N. savatieri in limiting the production of K. alvarezii has not been studied yet. The present paper studied the effects of N. savatieri infection on photosynthetic behaviors in K. alvarezii by detecting chlorophyll fluorescence transient in vivo. The results revealed that damage of oxygen-evolving complex (OEC), decrease of active reaction centers (RCs), and the plastoquinone (PQ) pool as well as significant reduction in the performance indexes (PI) of PSII were caused by the infection of N. savatieri. The influence of N. savatieri on photosynthetic activity of K. alvarezii should be one of the important reasons to reduce the production of K. alvarezii infected by N. savatieri.
附生丝状藻（EFA）被认为是降低 K. alvarezii 产量和质量的严重问题。形态学研究表明，在中国，K. alvarezii 上的主要附生物是 Neosiphonia savatieri。虽然已经报道了 EFA 对 K. alvarezii 产量的有害影响，但尚未研究 N. savatieri 限制 K. alvarezii 产量的详细机制。本文通过检测活体叶绿素荧光瞬变研究了 N. savatieri 感染对 K. alvarezii 光合作用行为的影响。结果表明，N. savatieri 的感染导致放氧复合体（OEC）的破坏、活性反应中心（RCs）的减少、质体醌（PQ）库以及 PSII 性能指标（PI）的显著降低。N. savatieri 对 K. alvarezii 光合作用活性的影响可能是 N. savatieri 感染降低 K. alvarezii 产量的重要原因之一。
