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首页> 外文期刊>Chinese science bulletin >Relationship between heat production and operation of alternative pathway in aging potato tuber slices
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Relationship between heat production and operation of alternative pathway in aging potato tuber slices

机译：马铃薯块茎切片老化过程中热量产生与替代途径的关系

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摘要

Plant mitochondria are different from animal mitochondria mainly by possessing the cyanide-resistant, alternative electron transport system, which is known as a system insensitive to inhibitors (such as KCN) of the cytochrome pathway. The alternativepathway was first observed in spadix tissues of Arum lilies and was thought to be relevant to the dramatic increase of heat production (thermogenesis) when the plant was flowering. Thereafter, the thermogenic plants and the nonthermogenic plants were distinguished according to the criterion of heat production in plants. Many reports demonstrated that thermogenesis existed in almost all thermogenic plants when they were flowering. It was also reported that heat production in Sauromatum gutattum (Schott)was mainly due to the operation of the alternative pathway induced by salicylic acid which is known as a natural and endogenous "calorigen". Exogenous application of salicylic acid to voodoo lily induces heat production and results in a blooming in advance. Though the alternative pathway was found in all detected plants and some fungi, there is no report concerning heat production in nonthermogenic plants. In the present study, by using potato tuber slices as experimental materials, an investigation ismade to demonstrate the thermogenesis and the effects of salicylic acid on thermogenesis in nonthermogenic plants.
机译：植物线粒体与动物线粒体的不同之处主要在于具有抗氰化物的替代电子传输系统，该系统被称为对细胞色素途径的抑制剂（如KCN）不敏感的系统。该替代途径首先在Arum百合的茎秆组织中观察到，并被认为与植物开花时热量产生（生热）的急剧增加有关。此后，根据植物中产热的标准区分产热植物和非产热植物。许多报告表明，几乎所有热生植物在开花时都存在热生成。也有报道称，在金头菇中产生热量主要是由于水杨酸诱导的替代途径的运行，水杨酸被称为天然的和内源的“热量源”。将水杨酸外加到伏都教百合中会产生热量并提前开花。尽管在所有检测到的植物和某些真菌中都发现了替代途径，但没有关于非热原植物产生热量的报道。在本研究中，以马铃薯块茎切片为实验材料，进行了研究以证明其生热作用以及水杨酸对非生热植物中生热作用的影响。

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