Prospecting the unpredicted potential traits of Cladophialophora chaetospira SK51 to alter photoperiodic flowering in strawberry, a perennial SD plant
Prospecting the unpredicted potential traits of Cladophialophora chaetospira SK51 to alter photoperiodic flowering in strawberry, a perennial SD plant
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DOI：
10.1016/j.scienta.2021.110835
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发表时间：
2021-12-23
影响因子：
4.3
通讯作者：
Narisawa, Kazuhiko
中科院分区：
文献类型：
--
作者：
Harsonowati, Wiwiek;Masrukhin;Narisawa, Kazuhiko
由于草莓的经济重要性，许多国家已经建立了国家育种计划，旨在改善开花时间和结果季节，以实现全年水果供应。农作物在一年四季都能“按需开花”的情况下生产果实的能力仍然是草莓生产系统的一个挑战。虽然已经报道了暗隔膜内生真菌（DSE）的生长促进作用，但改变光周期水果作物开花行为的共生关系尚未研究。在这里，我们建立了一个实验方案，诱导短日（SD）草莓品种野草莓开始开花下长日（LD）光周期与DSE真菌共生协会。我们使用Pearson相关分析评估了生长促进和开花诱导活动之间的关系。与C.毛螺旋菌SK 51显着刺激SD草莓品种提前开花，在23摄氏度、LD光周期16小时（定义为非开花诱导条件）下培养时，开花诱导率最高（94.8%），果实数量最多（10.6个果实/株），被认为是一项新发现。我们发现C.毛螺旋体SK 51和草莓植物显著地促进了开花时间的提前，因为花芽比未处理的对照早90天开始。有趣的是，我们发现，植物开花的反应，通过共培养的C。在不同土壤类型和pH值条件下，毛螺旋体SK 51不断被诱导。基于Pearson相关系数分析，我们认为开花行为与促生长活性之间存在微弱的非显著关系，表明开花的控制有不同的或间接的途径。草莓与C. Chaetospira SK 51可能很好地适应所有地区，并有助于保持作物对不利气候条件的适应能力。这些发现为光周期开花研究和创新提供了必要的资源和新的见解，可用于提供可持续的解决方案，最终将导致扩大和增加作物产量。
Due to the economic importance of strawberry, many countries have established national breeding programs aimed at improving the flowering time and fruiting season to achieve year-round fruit availability. The ability of crops to produce fruits throughout the year with "flowering on command" is still a challenge in strawberry production systems. Although growth promotion by dark septate endophytic (DSE) fungi has been reported, the symbiotic association that alters flowering behaviors in photoperiodic fruit crops has not been studied. Here we established an experimental scheme for inducing the short-day (SD) strawberry cultivar Fragaria vesca to initiate flowering under a long-day (LD) photoperiod in symbiotic association with DSE fungus. We evaluated the relationship between growth-promoting and flower-inducing activities using Pearson's correlation analysis. Symbiotic association with C. chaetospira SK51 markedly stimulated SD strawberry cultivar to initiate early flowering, with the greatest flower induction (94.8%) and highest number of fruits (10.6 fruits/plant) during cultivation under a 16-h LD photoperiod at 23 degrees C, defined as non-flower-inductive conditions, considered as a new finding. We found that the interactions between C. chaetospira SK51 and strawberry plants markedly contributed to accelerating the earliness of the flowering time, as flower buds were initiated 90 days earlier than in the untreated control. Interestingly, we show that plant response in flowering by co-cultivation of C. chaetospira SK51 is constantly induce under various soil types and pHs. Based on Pearson's correlation coefficient analysis, we suggest that flowering behavior has a weakly non-significant relationship with growthpromoting activities, indicating that the control of flowering has a different or indirect pathway. Strawberry plants in symbiosis with C. chaetospira SK51 might be well-adapted to all regions and help preserve crops resilience against adverse climate conditions. These findings provide an essential resource and new insight for photoperiodic flowering research and innovation that can be adopted to deliver sustainable solutions that eventually will lead to extending and increasing crop production.