[스크랩] 생태자급자족퀴즈 212번 퀴즈 정답 - 식물로 난방하는 비법은?

 

정답은 발열하는 식물들을 활용하는 것입니다.

 

 

 

 

 

 

 

 

Respiration by Thermogenic Flowers

 

Roger S. Seymour Ecology and Evolutionary Biology Adelaide University, Australia and Kikukatsu Ito Cryobiofrontier Research Center Iwate University, Japan

September, 2010

Over 200 years ago, the French biologist, Jean-Baptiste de Lamarck, wrote that the blossom of a European arum lily warmed up during the sequence of blooming (Lamarck, 1803 -1815).

 

200년 전에 프랑스 생물학자 쟝 밥티스트 드라마르크는 유럽산 애럼릴리가 개화기때 발열한다고 발표하였습니다.

 

Since then, botanists have recorded significant self-heating in the flowers, inflorescences(개화) or cones(구과) in several families of plants, including Araceae, Arecaceae, Aristolochiaceae, Annonaceae, Cycadaceae, Cyclanthaceae, Hydnoraceae, Illiciaceae, Magnoliaceae, Nelumbonaceae,

Nymphaeaceae, Rafflesiaceae, Schisandraceae and Winteraceae.

 

이후 식물학자들은 다음 식물들같은 상당한 발열을 하는 식물들을 기록하였습니다.

 

These groups are all primitive seed-plants with rather large, fleshy floral structures that are often associated with beetle, bee or fly pollinators.

Some species, such as the arum lilies, are so intensely thermogenic that the temperature of their flowers can increase up to 35°C above the surroundings.

 For example, in Brazil, the inflorescence of Philodendron selloum is capable of warming to over 40°C at air temperatures close to freezing (Figure 1) (Nagy et al., 1972).

 

애럼릴리의 경우 주변온도가 영하권일때 35°C까지 온도를 올릴수 있습니다.

 

브라질의 필로덴드론 세럼의 꽃은 주변이 영하권일때 40°C이상까지 발열할수 있습니다.

 

Skunk cabbage, Symplocarpus, in North America and Japan, can maintain temperatures above 15°C when the air temperature drops to -15°C, and it often melts the snow around it (Seymour, 2004, Onda et al., 2008).

 

북미와 일본의 스컹크 캐비지의 경우 주변온도가 -15°C로 떨어지면  15°C이상의 열을 유지할수 있습니다.

 

The respiratory rates of some thermogenic flowers are the highest among plants, and in fact exceed even those of warm-blooded animals. For example, the tissues of Arum maculatum and Helicodiceros muscivorus produce up to about 400 milliWatts per gram (mW g-1) (Lance, 1974, Seymour et al., 2003a), while a flying

 hummingbird produces only 240 mW/g-1. At an air temperature of 10°C,

 

10°C의 온도에서 벌새가 g당 240미리와트의 전기를 생산하는데 비하여 Arum maculatum and Helicodiceros muscivorus 의 조직은g당 400미리와트의

 전기를 발생합니다.

 

a 125 g inflorescence of P. selloum produces about five times the

amount of the heat of a 125 g rat under the same conditions. Such high rates of heat production demand a good supply of oxygen.

 

125 g의 세럼꽃은 125 g의 생쥐가 발생하는 열의 5배정도를 발산합니다.

 

In the florets of P. selloum, this is achieved by diffusion through a network of tiny intercellular gas spaces that permeate the tissue to the center. Oxygen demand is so high, that the oxygen partial pressure at the center of the floret drops to about one-quarter of atmospheric, but remains just above the critical level where oxygen uptake becomes diffusion-limited (Seymour, 2001).

 

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