Application of proline in enhancing stress resistance of plants

 Proline is an important amino acid accumulated in plants under stress such as drought, high temperature, high salt, freezing, ultraviolet irradiation and heavy metal, and plays a key role in plant osmotic regulation.



 

(1)Proline can reduce the damage of salt stress to plants

In 1 x Hoagland nutrient solution culture muskmelon seedling, the growth of normal (figure 1, A), add 100mmol·L-1NaCl in 1 x Hoagland nutrient solution melon seedling plants grow bad, in short, the salt injury symptoms of more severe (figure 1, B), and in the add 100mmol·L-1NaCl + 0.2mmol·L - 1proline of 1 x Hoagland nutrient solution melon seedling growth basic normal, the salt injury symptoms significantly reduce (figure 1, C).







(2) Proline can effectively improve the morphological indexes of rice under salt stress

From table 3-2, figure 3-3 (A and F), the salt stress significantly inhibit rice seedling stage of seedling height, root length, root number and the relative seedling height and relative root number, seedling height, root length, fell by 3.83 cm and 0.75 cm respectively than control, the root number reduce 4 and 6, relative seedling height and relative root number is 40.5% and 31.7% according to the normal, but had no significant inhibitory effect on the relative root length.

 

Under the condition of salt stress, proline seeding could significantly improve the seedling height, root length, root number and their relative values of germinated rice seeds. Moreover, under the treatment of low concentration of proline 5mmol/L (FIG. 3-3G), the effect of salt stress on phenotypic traits of rice could be alleviated, and even the root length, relative seedling height and relative root length could be restored to the normal level.

Higher concentration of proline (30mmol/L) could restore the seedling height to the normal level (FIG. 3-3i).

The results showed that proline could effectively improve the morphological indexes of rice under salt stress.





(3) Proline participates in plant flowering signal transduction

Proline plays an important role in plant growth and development as a signal molecule.

Many studies have shown that proline plays a certain role in flower development of plants.

The content of free proline was the highest in arabidopsis thaliana, especially in pollen grains, accounting for 26% of the total amino acid content.

Through the proline physiological toxicity experiments of arabidopsis thaliana, observed 45mmol·L for proline L can inhibit the growth of wild-type arabidopsis, led to the deaths of young plants, in different concentrations (0, 15, 30, 45 mmol·L) proline medium, Sow for 2 weeks, kao2 all show the resistance of proline, embodied in the root and the growth of aboveground part were significantly better than that of wild type (figure 1), plant fresh weight and chlorophyll content were higher than in wild type (figure 2).



If you have any interest, please feel free to contact:

Anne Chou

Email:anne@cyclebioscience.com

Whatsapp:+86 15050351426

评论

发表评论

此博客中的热门博文

The role of gamma-aminobutyric acid in agriculture

图片
  γ-aminobutyric acid (CAS number: 56-12-2), (GABA for short), with a relative molecular weight of 103.1, is a four-carbon, non-protein amino acid, which is widely used in vertebrates, plants and Widespread in microorganisms. The content of GABA in plant tissues is extremely low, usually between 0.3 and 32.5 μmol/g.  It has been reported in the literature that the enrichment of GABA in plants is related to the stress response experienced by the plant. When subjected to stress such as hypoxia, heat shock, cold shock, mechanical damage, and salt stress, it will lead to the rapid accumulation of GABA.  It has become a research hotspot to process plant food raw materials into GABA-rich functional products after a certain stress treatment or through microbial fermentation to increase the GABA content in the body.  As a novel functional factor, GABA has been widely used in the food industry.  Foods developed using raw materials such as GABA-rich  germinated brown rice  , soybeans and broad
阅读全文

Analysis on the role of rhizobia in soybean planting

图片
Rhizobium soybean is a live microbial preparation. The rhizobia in the root nodules and the legumes are mutually beneficial: the organic matter produced by the legumes through photosynthesis is partly supplied to the rhizobia; the ammonia produced by the rhizobia through biological nitrogen fixation is supplied to the legumes plant. , it fixes free nitrogen in the air to supply soybeans to meet soybean demand for nitrogen. It is a good measure to increase soybean yield, save fertilizer and reduce pollution, and has been valued by researchers around the world. First, the role of rhizobia 1. Nitrogen fixation Soybean rhizobia uses the products of soybean photosynthesis as energy, and converts nitrogen in the air into nutrients required for soybean growth and development. Rhizobium and soybean have a symbiotic nitrogen fixation relationship. At the beginning, soybean rhizobia fixed little nitrogen, until flowering to drum. The initial stage of grain is the peak of nitrogen fixation by so
阅读全文

The new cotton shoot-controlling product--prohexadione calcium, which is better than uniconazole, does not cause premature aging!

图片
Uniconazole is a triazole plant growth regulator widely used in cotton production. In recent years, it has an obvious effect on controlling the growth of cotton, promoting flowers and peaches, and can also increase the ratio of cotton double bolls. Welcomed by some cotton farmers.  Today, I will introduce to you a new type of plant growth regualtor, which is more effective than Uniconazole. It is better than Uniconazole because it is not prone to premature aging and defertilization of cotton. 1. What is prohexadione calcium Prohexadione calcium is a new type of plant growth regulator developed by Japan Combina Chemical Industry Co., Ltd. It interferes with the synthesis of gibberellic acid in plants, reduces the content of gibberellic acid in plants, controls leggy growth, promotes flowering and fruiting, and increases yield. Make its root system developed, protect cell membrane and organelle membrane, and improve crop resistance ability. So as to inhibit the upper vegetative growth of
阅读全文