I am interested in using digital imagery to measure seedling growth
(the seedlings would be in petri dishes, not soil). I don't have much
cash and need to buy a scanner that can scan the petri dishes with the
lids on. So I need a scanner with a transparency adapter (a top light
source as well as the bottom light source).

I've looked around a lot but the array of products available is kind
of bewildering to me. The journal paper I am using to cite for
methodology is several years old and they used an HP Scanjet 4c/t
which I believe has a 600 dpi resolution. This machine is totally
obsolete now but I've no clue as to what would be best. I know this is
maybe a weird topic for this forum but maybe someone has experience
scanning roots/plants and would be able to recommend an inexpensive
scanner.

Thanks!

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Not sure how to post a question – but here is one that I have been wondering
about.

Simply – Why are plants green?

I understand about absorption and reflection by photosynthetic pigments but
my real questions is why have plants not evolved abundant molecules that
absorb green light for use in photosynthesis. I know that there are some
plants that have higher levels of anthocyanins and other photosynthetic
flavonoids but why don’t most plants?

Also – If plants did make more complete use of the visible portion of light
– what color would they be? I am guessing more like black or darker shades?

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The Department of Biology at the University of Massachusetts at Amherst
is seeking to fill three tenure-track faculty positions at the Assistant
professor level.

One position is in the area of Plant Metabolism. We are seeking a
researcher who uses systems biology and/or functional genomic approaches
to understanding plant metabolism. The area of research should be
relevant to the use of plants for bioenergy, for example, carbon
metabolism or biopolymer production by plants

The researchers would be expected to participate in a broad
multi-disciplinary initiative in Global Change Biology within the
Department of Biology. This initiative bridges a group of faculty who
use multiple levels of analysis to understand how rapid environmental
changes are impacting populations and individual organisms, including:
loss of biodiversity, rapid evolution, disruption of physiology, reduced
agricultural outputs, and evolution of new pathogens. Postdoctoral
experience required

Please help me with my UFFO's
Unidentified Fungal and Fauna Objects

I was digging in the litter on a wooded (Oak, Madrone, Pine, Doug-fir)
hillside in southern Oregon and came across a puzzling item.

It is a 3cm tan spherical organic aggregate make up of plant fragments
(80%%) enclosed in a fine grain tan matrix. I saturated it with water
to get the fauna moving around.

It is densely packed with .5mm black teardrop-shaped structures
(UFFungal?O) imbedded 1/3 to 2/3 into the surface. They disintegrate
easily into a liquid with probing. With care, it is possible to detach
one from the surface and turn it over. The base has a round opening
with "roots" oriented towards the center.

Among the living organisms found throughout are a few widely spaced
white fungal filaments throughout and an occasional group of very fine
black filaments attached to the surface in a net pattern. Also found
on the surface are small groups of projecting fine white dendritic
fungal filaments. An occasional springtail makes an appearance.

The next two UFFaunaO's are both transparent.

Recently the construct was made were binary vector has spec resistance for
selection of E. coli containing this plasmid. Does anybody know if the nos
promoter that is driving nptII (on T-DNA) is active in Agrobacterium? In
our previous similar constructs nptII was driven by 35S not by nos
promoter and Agro could be selected with kanamycin as well (100 mg/ml). I
have read some references that nos promoter would be active but Agro could
grow with kanamycin at lower concentration. Any comments or literature
reference?

Thanks

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GjYIasUU?

Hello,

I am journalist studying the question of the use of polymers in soil
conditioners such as Terracottem.

The company (see www.terracottem.com) says it is non-toxic, but is that
really so? How sure can we be?

Other question : this soil conditioner is highly expensive, supposedly so
because of the price of non-toxic polymers : can that be be true, or is that
fake excuse for selling their product at as high a price as possible (a
pity, since it could be a solution for erosion and drought problems in arid
regions - which, as we know, are most often poor).

Don't know if I came to the right person with this question, but would be
most thankful if there would be a reply or piece of advice....

F (brussels, Belgium)

Hello all,
This plant was found growing along the road in Costa Rica.
We can't seem to find out what it is.
Can anyone help?

http://www.sunxsol.com/ftp_uploads/unknown_plant.JPG

Sorry for the large file but wanted to have a detailed picture.

Thanks,
Wendell