Several reports about these
three climber plant species are available, Lonicera pampaninii
is a pioneer species in the karst mountain areas
where the vegetations were generally at P-limited stress
(Du et al., 2011), P. nil and P. tricuspidata can also grow
in the karst areas, however, distribution of the three
climber plant species are different, so it is necessary to
study their photosynthetic responses to P deficiency
stress or their photosynthetic adaptation mechanisms in
response to P deficiency stress.