Mubarok Syariful, Jadid Nurul, Widiastuti Ani, Derajat Matra Deden, Budiarto Rahmat, Lestari Fitrianti Widya, Nuraini Anne, Suminar Erni, Pradana Nur Rahmat Bayu, Ezura Hiroshi
Department of Agronomy, Faculty of Agriculture, Universitas Padjadjaran, Sumedang, Indonesia.
Department of Biology, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia.
Front Plant Sci. 2023 Mar 1;14:1090774. doi: 10.3389/fpls.2023.1090774. eCollection 2023.
Fruit set is one of the main problems that arise in tomato plants under heat-stress conditions, which disrupt pollen development, resulting in decreased pollen fertility. Parthenocarpic tomatoes can be used to increase plant productivity during failure of the fertilisation process under heat-stress conditions. The aim of this study were to identify the plant adaptability and fruiting capability of ? and tomato mutants under heat-stress conditions. The and and wild-type Micro-Tom (WT-MT) plants were cultivated under two temperature conditions: normal and heat-stress conditions during plant growth. The results showed that under the heat-stress condition, and showed delayed flowering time, increased number of flowers, and increased fruit set and produced normal-sized fruit. However, WT-MT cannot produce fruits under heat stress. The mutants can grow under heat-stress conditions, as indicated by the lower electrolyte leakage and HO concentration and higher antioxidant activities compared with WT-MT under heat-stress conditions. These results suggest that and can be valuable genetic resources for the development of tomatoes in high-temperature environmental conditions.
坐果是番茄植株在热胁迫条件下出现的主要问题之一，热胁迫会干扰花粉发育，导致花粉育性下降。在热胁迫条件下受精过程失败时，单性结实番茄可用于提高植株生产力。本研究的目的是确定？和番茄突变体在热胁迫条件下的植株适应性和结果能力。？和？以及野生型微型番茄（WT-MT）植株在两种温度条件下培养：植株生长期间的正常温度条件和热胁迫条件。结果表明，在热胁迫条件下，？和？开花时间延迟、花的数量增加、坐果增加且果实大小正常。然而，WT-MT在热胁迫下不能结果。与热胁迫条件下的WT-MT相比，突变体的电解质渗漏和过氧化氢浓度较低，抗氧化活性较高，表明突变体能够在热胁迫条件下生长。这些结果表明，？和？可能是在高温环境条件下培育番茄的宝贵遗传资源。
