Cryptochromes are photoreceptors that coordinate multiple processes during the plant life cycle through UV-A/blue light. In the present study, we used tomato cry1a mutant to understand how LeCRY1a influences the vegetative and reproductive development during different stages of growth. When compared to the wild type of tomato, the cry1a mutant showed greater plant height, number of leaves and leaf area during the life cycle. However, leaf pigment biosynthesis in cry1a was impaired compared with wild-type plants. Moreover, cry1a influenced the partitioning of photoassimilates between the shoot and root, mainly by positively influencing the initial root growth. Although the wild-type plants exhibited lower shoot and root biomass accumulation at the final stage of plant growth than did the mutant, the wild type exhibited higher yield, as evidenced by its greater number of ripe fruits per plant. The results reveal a complex role of cry1a throughout shoot and root growth and fruit development in tomato, causing this photoreceptor to stand out as target molecules for plant breeding programs.

中文翻译：

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隐铬1a在番茄生长的不同阶段影响源库分配

隐色染料是感光剂，它们通过UV-A /蓝光在植物生命周期中协调多个过程。在本研究中，我们使用番茄cry1a突变体来了解LeCRY1a如何在生长的不同阶段影响营养和生殖发育。与野生型番茄相比，cry1a突变体在生命周期中显示出更高的株高，叶片数和叶片面积。然而，cry1a中叶片色素的生物合成与野生型植物相比受损。此外，cry1a主要通过积极影响根的初始生长来影响芽与根之间光同化物的分配。尽管野生型植物在植物生长的最后阶段显示出较低的芽和根生物量积累，但突变体却没有，但野生型则显示出更高的产量，这可以通过每株植物中成熟果实数量的增加来证明。结果揭示了cry1a在番茄的整个芽和根生长以及果实发育中的复杂作用，使该感光体成为植物育种计划的目标分子，脱颖而出。