Overwintering performance of bamboo leaves, and establishment of mathematical model for the distribution and introduction prediction of bamboos

Abstract

Bamboo has great economic values and is used extensively in many industries, and their natural distribution range was divided into 12 zones in China according to the temperature of their geographical distribution in previous works. Different bamboo species had significantly different abilities in low-temperature tolerance, which need to be considered carefully during ex-situ introduction. In this paper, we observed and evaluated the low-temperature damage of 19 bamboo species in winter, and measured the physiological changes of bamboo leaves. A total of 3060 leaf samples were obtained from 102 core collections in 34 bamboo species from the 5 regions of Chinese mainland for anatomical comparison, in order to screen out the key anatomical indicators related to their low-temperature tolerance and to establish a mathematical prediction model for bamboo introduction. The results showed that the low-temperature resistance of clustered bamboos was generally lower than that of the scattered bamboos. The decreased temperature led to the constant decrease of net photosynthetic rate and transpiration rate, but the increase of soluble sugar content in all bamboo species. There was no dormancy for all bamboo species in winter. The temperate bamboos showed lower photosynthesis as compared to tropical bamboos in winter. The leaf shape of bamboos was closely related to their distribution. A total of 13 leaf indicators were screened and more suitable to estimate the low-temperature tolerant abilities of bamboos and to predict their distribution. The MNLR (multiple nonlinear regression) mathematical model showed the highest fitting degree and the optimal prediction ability in the potential northernmost introduction range of bamboos. This study lay a foundation for bamboo introduction, and could also reduce the economic losses caused by the wrong introduction.

The Effects of Sudden Freezing on the Biochemical Status of Bamboo Leaves: A Case Study on Nine Species on a Subtropical Plateau

“…Meanwhile, the low activities of GR and GPX and the achievement of the highest GSH/GSSG ratio suggested that the GSH-GSSG cycle did not play a key role in ROS scavenging or resistance against freezing damage caused by the sudden snowfall in the Phyllostachys leaves (Figure 5). Additionally, our previous studies showed that the anatomical characteristics of Phyllostachys leaves significantly contributed to their cold tolerance [65]. DHAR plays a crucial role in regulating cellular AsA redox homeostasis by regenerating AsA from its oxidized state, which is essential for tolerance to various abiotic stresses [35].…”

Comparative study of urea-15N fate in pure bamboo and bamboo-broadleaf mixed forests

“…There exists a total area of 13900 hectares of natural Q. tumidinoda resources in Daguan County. This area accounts for 59% of the global total area of natural Q. tumidinoda , which amounts to 23560 hectares ( Dong, 2019 ; Wu et al., 2023b ). The highly raised nodes on the culms of Q. tumidinoda make it an excellent material for crafting walking sticks, bamboo handicrafts, and round bamboo furniture ( Yiyuan et al., 2020 ; Li et al., 2021 ).…”