한국농림기상학회지, 제 8권 제2호(2006) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 8, No. 2, (2006), pp. 61~67
ⓒ Author(s) 2014. CC Attribution 3.0 License.


다른 광도에서 생육한 먼나무, 붓순나무의 생리적 차이

손석규(1), 제선미(2), 우수영(2), 변광옥(3), 강영제(1), 강병서(1)
(1)국립산림과학원 난대산림연구소, (2)서울시립대학교 환경원예학과,
(3)국립산림과학원 유전자원부

(2006년 03월 28일 접수; 2006년 05월 15일 수락)

Physiological Differences of Ilex rotunda and Illicium anisatum
under Low Light Intensities

Seog Gu Son(1), Sun Mi Je(2), Su Young Woo(2), Kwang Ok Byun(3), Young Je Kang(1), Byung Seo Kwang(1)
(1)Warm-temperature Forest Research Center, Korea Forest Research Institute, Jeju, 697-050, Korea
(2)University of Seoul, Department of Environmental Horticulture, Seoul, 130-743, Korea
(3)Korea Forest Research Institute, Department of Genetics Forest Resources, Suwon, 441-300, Korea

(Received March 28, 2006; Accepted May 15, 2006)

ABSTRACT
We examined seedlings of two species (Ilex rotunda and Illicium anisatum) which have a different level of shade tolerance and raised them under different light regimes (full sunlight and 50% shading). After 12 months, we investigated chlorophyll content (Chl. a, Chl. b and Chl. a+b), photosynthetic systems (photosynthetic rate, light compensation point, dark respiration rate and quantum yield), intercellular CO2 concentration and water use efficiency to show acclimation reaction to different light conditions. Seedlings grown under full sunlight showed lower chlorophyll content than those in the shading regime. There was a significant difference between the full sunlight and shade treatments in I. anisatum (shade tolerance species). I. rotunda (intermediate species) showed high photosynthetic rate and water use efficiency over PPFD 1000μmol m−2s−1 to full sunlight. Also, I. anisatum grown under full sunlight showed lower photosynthetic rate and water use efficiency over a range of all PPFD. This result showed that I. rotunda has a more flexible reaction system than that of I. anisatum.

Keyword: Chlorophyll contents, Dark respiration rate, Intercellular CO2 concentration, Quantum yield, Light compensation point, Photosynthetic rate, Shade tolerance, Stomatal conductance

MAIN

적요

내음성정도가 서로 다른 두 수종 먼나무와 붓순나무를 대상으로 높은 광도조건인 자연상태와 낮은 광도 조건인 비음 처리구로 나누어, 두 수종간의 적응 반응을 비교하였다. 두 수종의 묘목을 처리구에서 각각 1년간 비음처리하였을 때, 엽록소함량과 광합성계, 엽육세포내 CO2농도, 수분이용효율의 특성을 조사하였다. 엽록소 함량은 두 수종모두 자연조건(full sunlight)일 때, 비음처리구에 비하여 낮은 엽록소 함량들(Chl a, Chl b, Chl a+b)을 나타냈으며, 붓순나무에서 특히 자연조건과 비음 처리구간의 엽록소 함량의 차이가 크게 나타났다. 한편, 중용수인 먼나무는 PPFD 1000 μmol m−2s−1 이상 일 때, 자연조건(full sunlight)에서 높은 광합성율과 높은 수분이용효율을 보였지만, PPFD 1000 μmol m−2s−1 이하에서는 비음처리구에서 자연조건에 비해 더 높은 광합성율과, 수분이용효율을 나타냈다. 이에 반해 붓순나무는 모든 광도에서 비음처리를 하지 않은 묘목이 비음처리를 한 묘목에 비해 낮은 광합성율과 수분이용효율을 나타냈다. 먼나무가 탄력적으로 광도변화에 따라 유동성 있는 반응을 보이는 것에 비해 내음성이 강한 붓순나무는 광환경 변화에 따른 민감성이 낮게 나타나는 것을 알 수 있었다.

REFERENCES

Arnon, D. I., 1949: Copper enzymes in isolated chloroplasts, polyphenol-oxidase in Betula vulgaris. Plant Physiology 24, 1-15crossref(new window)

Ashraf, M., M. Arfan, M. Shahbaz, M. Ahmad, and A. Jamil, 2002: Gas exchange characteristics and water relations in some elite skra culivars under water deficit. Photosynthetica 40(4), 615-620crossref(new window)

Catovsky, S., and F. Bazzaz, 2000: The role of resource interaction and seedling regeneration in maintaining a positive feedback in hemlock stands. Journal of Ecology 88, 100-112crossref(new window)

Hansen, U., B. Fiedler, and B. Rank, 2002: Variation of pigment composition and antioxidative systems along the canopy light gradient in a mixed beech/oak forest: a comparative study on deciduous tree species differing in shade tolerance. Tree 16, 354-364crossref(new window)

Hattenschwiler, S., 2001: Tree seedling growth in natural deep shade: functional traits related to interspecific variation in response to elevated $CO_2$. Oecologia 129, 31-42crossref(new window)

Hikosaka, K., and I. Terashima, 1996: Nitrogen partitioning among photosynthetic components and its consequence in sun and shade plants. Functional Ecology 10, 335- 343crossref(new window)

Jo, M. H., 1989: Coloured woody plants of Korea. Academybook, 152-300

Kim, P. G., Y. S. Yi, D. J. Chung, S. Y. Woo, J. H. Sung, and E. J. Lee, 2001: Effects of light intensity of photosynthetic activity of shade tolerant and intolerant tree species. Journal of Korean Forest Society 90(4), 476-487

Kitao, M., T. T. Lei, T. Koike, H. Tobita, and Y. Maruyama, 2000: Susceptibility to photoinhibition of three deciduous broadleaf tree species with different successional traits raised under various light regimes. Plant, Cell and Environment 23, 81-89crossref(new window)

Lincoln, T., and Z. Eduardo, 2000: Plant Physiology (3nd ed). Sinauer Associates Inc., 112-115

Lusk, C. H., 2002: Leaf area accumulation helps juvenile evergreen trees tolerate shade in a temperate rainforest. Oecologia 132, 188-196crossref(new window)

Makino, A., T. Sato, H. Nakano, and T. Mae., 1997: Leaf photosynthesis, plant growth and nitrogen allocation in rice under different irradiances. Planta 203, 390-398crossref(new window)

Muraoka, H., H. Koizumi, and R. W. Pearcy, 2003: Leaf display and photosynthesis of tree seedlings in a cooltemperate deciduous broad leaf forest understory. Oecologia 135, 500-509

Oliver, C. D., and B. C. Larson, 1996: Forest Stand Dynamics. John Wiley & Sons Inc., 22pp

Terashima, I., and Hikosaka, K. 1995: Comparative ecophysiology of leaf and canopy photosynthesis. Plant, Cell and Environmnet 18, 1111-1128crossref(new window)

Valladares, F., S. J. Wright, E. Lasso, K. Kitajima, and R. W. Pearcy, 2000: Plastic phenotypic response to light of 16 congeneric shrubs from a Panamanian rainforest. Ecology 81,1925-1936

Valladares, F., and R. W. Pearcy, 1997: Interactions between water stress, sun-shade acclimation, heat tolerance and photoinhibition in the sclerophyll Heteromeles arbutifolia. Plant, Cell and Environment 20, 25-36crossref(new window)

Valladares, F., J. M. Chico, I. Aranda, L. Balaguer, P. Dizengremel, E. Manrique, and E. Dreyer, 2002: The greater seedling high-light tolerance of Quercus robur over Fagus sylvatica is linked to a greater physiological plasticity. Tree 16, 395-403

Walters, M. B., and P. B. Reich, 1999: Low-light carbon balance and shade tolerance in the seedlings of woody plants: Do winter deciduous and broad-leaved evergreen species differ? New Phytologist 143, 143-154crossref(new window)