The effects of carbon nanoparticle (CNP) on rice variety Swarna (MTU7029) were investigated. CNP induced effects similar to shade avoidance response (SAR) of Arabidopsis, with increase in shoot length, root length, root number, cotyledon area, chlorophyll content and total sugar content in rice seedlings. In mature plants, CNP treatment resulted increase in plant height, number of productive tillers per plant, normalized difference vegetation index, quantum yield and root growth. A total of 320 mg of CNP per plant administered in four doses resulted in improved grain traits such as filled grain rate, 100-grain weight, grain length/width ratio, hulling rate, milling rate and head rice recovery. Seeds from the CNP-treated plants showed increase in amylose, starch and soluble sugar contents compared to controls. Strikingly, CNP treatment showed an average of 17.5% increase in yield per plant. Upon investigation to the molecular mechanism behind CNP induction of SAR, a significant downregulation of phytochrome B transcript was found. Decrease in perception of red wavelengths led to responses similar to SAR. Increase in plant's internal temperature by 0.5 °C ± 0.1 °C was recorded after CNP treatment. We suggest that the internalized CNP aggregates may serve to absorb extra photons thereby increasing the internal temperature of plants. Phytochrome B accounts the hike in internal temperature and initiates a feed-back reduction of its own transcription. We suggest that moderate SAR is beneficial for rice plants to improve agronomic traits and yield. It presents a potential non-transgenic method for improving rice yield by CNP treatment.

研究了碳纳米颗粒（CNP）对水稻Swarna（MTU7029）的影响。CNP诱导的作用类似于拟南芥的避荫响应（SAR），但水稻幼苗的茎长，根长，根数，子叶面积，叶绿素含量和总糖含量增加。在成熟植物中，CNP处理导致植物高度增加，单株生产分till数量增加，归一化差异植被指数，量子产量和根系生长。共320 每棵植物以四剂量施用CNP毫克，可改善谷物的性状，例如充实谷物率，100粒重，谷物长/宽比，脱壳率，碾米速率和稻米恢复率。与对照相比，来自CNP处理过的植物的种子显示出直链淀粉，淀粉和可溶性糖含量的增加。令人惊讶的是，CNP处理显示每株植物平均增产17.5％。通过研究CNP诱导SAR背后的分子机制，发现了植物色素B转录物的显着下调。对红色波长的感知减少导致响应类似于SAR。工厂内部温度升高0.5  °C  ±  0.1 CNP处理后记录℃。我们建议，内在的CNP聚集体可能会吸收多余的光子，从而增加植物的内部温度。植物色素B解释了内部温度的升高并引发了其自身转录的反馈减少。我们建议适度的SAR有利于水稻植物改善农艺性状和产量。它提供了一种潜在的非转基因方法，可通过CNP处理提高水稻产量。