Martin and Ecolog:

I don't know. But "restriction" is not an angle I had thought of. Please elaborate.

If you know of any literature which explains how C4 plants can, in effect, pull a rabbit out of a silk hat and provide more feedstock for biofuel or food, etc. on less water, please let me know.

I am looking for evidence in support of the many efforts that are ongoing to pursue increased production on drier sites, such as the planting of switchgrass in commercial plantations on what is left the shortgrass prairie, for example.

WT

----- Original Message ----- From: "Martin Meiss" <[email protected]>
To: <[email protected]>
Sent: Tuesday, December 20, 2011 9:50 AM
Subject: Re: [ECOLOG-L] Plant Physiology Drought tolerance Re: [ECOLOG-L] course and symposium on plant breeding for drought tolerance


Well, Wayne, wouldn't you consider C4 metabolism to be a form of drought
tolerance that doesn't require restriction of biomass production?  C4
plants can open their stomata at night, when water loss will be less than
during the day, absorb C02 and store it in the C4 molecule.  When the sun
rises they close their stomata to reduce water loss and proceed to
photosynthesis using the stored carbon.  It's a neat trick and apparently
has evolved more than once because the molecular details differ in
different taxa.

Martin M. Meiss

2011/12/19 Wayne Tyson <[email protected]>

Ecolog:

What IS drought tolerance?

What evidence is there that plants can manufacture more biomass/crop yield on less water rather than to evade water deficits by continuing to survive
by reducing biomass production?

WT

----- Original Message ----- From: "David Inouye" <[email protected]>
To: <[email protected]>
Sent: Monday, December 19, 2011 1:49 PM
Subject: [ECOLOG-L] course and symposium on plant breeding for drought
tolerance


 PLANT BREEDING FOR DROUGHT TOLERANCE
Moisture deficits loom as one of the greatest challenges to future crop
production, both in rainfed and irrigated agriculture. Enhancing the
genetic tolerance of crops to drought stress, is considered an essential
strategy for addressing these deficits. To respond to the need for more
plant scientists trained in developing drought tolerant cultivars, Colorado
State University will offer a short course in Plant Breeding for Drought
Tolerance June 11-22, 2012.

The course will end with a two-day symposium on Plant Breeding for
Drought Tolerance, which will be given June 21-22, 2012 and is open to the public. Confirmed speakers include Drs. John Boyer, John Passioura, Eduardo
Blumwald, Tom Juenger, Amelia Henry, Sean Cutler and Jill Deikman.

TARGET AUDIENCE
The course is targeted to graduate students in the plant sciences, as
well as to professionals in the public and private sectors. It will provide
three transferable graduate-level credits.

CONTENT
The course will consist of classroom lectures, hands-on lab exercises,
and field research activities appropriate for a drought breeding and
genetics program. Course activities are designed around three modules: 1)
Whole Plant Physiology of Drought Stress, 2) Plant Breeding for Drought
Stress Tolerance and 3) Genomic Approaches to Drought Stress Tolerance.

PREREQUISITES
The course will be given in English.

Participants should have a solid understanding of basic plant physiology
and genetics. Prior to the short course, students will review online
material on these topics to provide a common background in breeding and
physiology concepts.

PROGRAM COSTS
The cost of student tuition and fees is $1,800. Accommodations for room
and board are available on-campus for either $850 (double occupancy) or
$1,150 (single occupancy). This cost includes three meals daily. Guests are also welcome to make their own arrangements for room and board. All foreign
visas and travel arrangements are at students' initiative and expense.

FUNDING
Partial funding to develop the course was provided by a grant from
USDA-NIFA. No scholarships are available for the course.

REGISTRATION AND INFORMATION
Participants may apply online (http://www.droughtadaptation.**org<http://www.droughtadaptation.org> <http://www.**droughtadaptation.org/ <http://www.droughtadaptation.org/>>)
through February 1, 2012.

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