moso bamboo phyllostachys pubescens giant bamboo

NSCs probably can provide a temporary source of carbon when current photosynthesis cannot meet the immediate carbon demands of bamboo 13.

The NSCs pool is the sum of soluble sugars and starches, and NSCs can be remobilised for multiple usages and play an important role in plant defences, germination, growth, reproduction and survivorship under stresses 12. SCs, including cellulose, hemicelluloses, lignin, and pectin, are used for the structural growth in plants 11. As the important compounds from plant photosynthesis, carbohydrates can be synthesised into NSCs and SCs according to their purposes which depend on different environments and conditions 9, 10. NSCs and some parts of SCs are a kind of format for storing energy in plants and Moso bamboos. bamboo shoots and young bamboos) to quick grow or recover photosynthetic function after extreme weather events in bamboo forests.įor clarifying the phenomenon of carbohydrate-dependent in new born bamboos 7 and the speculation of which carbohydrates and nutrients needed for the construction of new bamboos are provided by other attached mature bamboos via underground (also known as belowground) rhizomes 8, a research team proved the hypothesis that the non-structural carbohydrates (NSCs) needed for the structure carbohydrates (SCs) and metabolism of bamboo shoots during the fast growth period (FGP) probably are provided by attached mature bamboos via belowground rhizomes 5. This phenomenon may be called a kind of “nursing behaviour” which helps juvenile individuals (e.g. Because it has leptomorph rhizome systems, some studies assume that mature bamboos perhaps provide nutrients and carbohydrates to bamboo shoot 5 and juvenile bamboos 1, 3, 6. Moso bamboo ( Phyllostachys edilus) is a kind of broadly distributed bamboo species with its leptomorph rhizome systems in east Asia 1, 2, 3, 4. Our findings indicate that mature bamboos very possibly provide carbohydrates to immature bamboos and help them rebuild their photosystems when a bamboo forest resists cold stress. The Fv/Fm, an indicator to reveal photosystems were functional or not, at age 1 dramatically dropped when the cold current attacked first time in October, and then quickly recovered in November. The results showed that the mass fraction of total soluble carbohydrates (TSCs) and starch in the bottom of bamboo at age 1 was higher than other parts and ages in spring, whereas the mass fraction of TSCs, starch, and sucrose at age 3 was higher than other parts and ages in winter. We analysed carbohydrates and chlorophyll fluorescence to compare the physiological traits in mature (age 2, 3, 4) and immature (age 1) Moso bamboos ( Phyllostachys edilus) during a year using the Portable Chlorophyll Fluorometer (PCF) and the Liquid Chromatographic (LC) method. This process is accompanied by changes in the ability of photosystems and the mass fraction of non-structural carbohydrates (NSCs), structural carbohydrates (SCs), and lignin. As a hypothetical phenomenon in bamboo forests, mature bamboos have transferred photoassimilates to young bamboos for recovering and rebuilding their photosystems especially in winter. Nursing behaviour, also known as breastfeeding behaviour, is the feeding of juvenile individuals with nutrients or proteins from matures especially in mammals.

Moso bamboo phyllostachys pubescens giant bamboo