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<title>UTas ePrints - Stomatal Closure during Leaf Dehydration, Correlation with Other Leaf Physiological Traits</title>
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<meta content="Brodribb, Tim J." name="eprints.creators_name" />
<meta content="Holbrook, N. M." name="eprints.creators_name" />
<meta content="Timothy.Brodribb@utas.edu.au" name="eprints.creators_id" />
<meta name="eprints.creators_id" />
<meta content="article" name="eprints.type" />
<meta content="2007-11-30 04:34:31" name="eprints.datestamp" />
<meta content="2008-02-11T00:25:32Z" name="eprints.lastmod" />
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<meta content="Stomatal Closure during Leaf Dehydration,
Correlation with Other Leaf Physiological Traits" name="eprints.title" />
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<meta content="The question as to what triggers stomatal closure during leaf desiccation remains controversial. This paper examines
characteristics of the vascular and photosynthetic functions of the leaf to determine which responds most similarly to
stomata during desiccation. Leaf hydraulic conductance (Kleaf) was measured from the relaxation kinetics of leaf water
potential (l), and a novel application of this technique allowed the response of Kleaf to l to be determined. These
“vulnerability curves” show that Kleaf is highly sensitive to l and that the response of stomatal conductance to l is closely
correlated with the response of Kleaf to l. The turgor loss point of leaves was also correlated with Kleaf and stomatal closure,
whereas the decline in PSII quantum yield during leaf drying occurred at a lower l than stomatal closure. These results
indicate that stomatal closure is primarily coordinated with Kleaf. However, the close proximity of l at initial stomatal
closure and initial loss of Kleaf suggest that partial loss of Kleaf might occur regularly, presumably necessitating repair of
embolisms." name="eprints.abstract" />
<meta content="2003" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Plant Physiology" name="eprints.publication" />
<meta content="132" name="eprints.volume" />
<meta content="4" name="eprints.number" />
<meta content="2166-2173" name="eprints.pagerange" />
<meta content="10.1104/pp.103.023879" name="eprints.id_number" />
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<meta content="Becker P, Tyree MJ, TsudaM(1999) Hydraulic conductance of angiosperms
versus conifer species: similar transport sufficiency at the whole-plant
level. Tree Phys 19: 445–452
Brodribb TJ, Holbrook NM (2003) Changes in leaf hydraulic conductance
during leaf shedding in seasonally dry tropical forest. New Phytol 158:
295–303
Brodribb TJ, Holbrook NM, Edwards EJ, Gutie´rrez MV (2003) Relations
between stomatal closure, leaf turgor and xylem vulnerability in eight
tropical dry forest trees. Plant Cell Environ 26: 443–450
Brodribb TJ, Holbrook NM, Gutie´rrez MV (2002) Hydraulic and photosynthetic
co-ordination in seasonally dry tropical forest trees. Plant Cell
Environ 25: 1435–1444
Buckley TN, Mott KA (2002) Dynamics of stomatal water relations during
the humidity response: implications of two hypothetical mechanisms.
Plant Cell Environ 25: 407–419
Cochard H, Coll L, Le Roux X, Ameglio T (2002) Unraveling the effects of
plant hydraulics on stomatal closure during water stress in walnut. Plant
Physiol 128: 282–290
Cruiziat P, Tyree MT, Bodet C, Logullo MA (1980) Kinetics of rehydration
of detached sunflower leaves following substantial water-loss. New Phytol
84: 293–306
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anatomical and ecophysiological approach. J Exp Bot 49: 255–278
Franks PJ, Cowan IR, Tyerman SD, Cleary AI, Lloyd J, Farquhar GD (1995)
Guard-cell pressure aperture characteristics measured with the pressure
probe. Plant Cell Environ 18: 795–800
Hacke UG, Stiller V, Sperry JS, Pittermann J, McCulloh KA (2001) Cavitation
fatigue: Embolism and refilling cycles can weaken the cavitation
resistance of xylem. Plant Physiol 125: 779–786
Holbrook NM, Zwieniecki MA (1999) Xylem refilling under tension: Do we
need a miracle? Plant Physiol 120: 7–10
Hubbard RM, Ryan MG, Stiller V, Sperry JS (2001) Stomatal conductance
and photosynthesis vary linearly with plant hydraulic conductance in
ponderosa pine. Plant Cell Environ 24: 113–121
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hydraulic resistance and capacitance. In RW Pearcy, J Ehleringer, HA
Mooney, PW Rundel, eds, Plant Physiological Ecology. Chapman and
Hall, New York, pp 161–183
Lawlor DW, Cornic G (2002) Photosynthetic carbon assimilation and associated
metabolism in relation to water deficits in higher plants. Plant Cell
Environ 25: 275–294
Nardini A (2001) Are sclerophylls and malacophylls hydraulically different?
Biol Plant 44: 239–245
Nardini A, Tyree MT, Salleo S (2001) Xylem cavitation in the leaf of Prunus
laurocerasus L. and its impact on leaf hydraulics. Plant Physiol 125:
1700–1709
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and capacitances for a C-3, a C-4 and a cam plant. J Exp Bot 34:
1379–1391
Raven JA (2002) Selection pressures on stomatal evolution. New Phytol 153:
371–386
Sack L, Melcher PJ, Zwieniecki MA, Holbrook NM (2002) The hydraulic
conductance of the angiosperm leaf lamina: a comparison of three measurement
methods. J Exp Bot 53: 2177–2184
Salleo S, Lo Gullo MA, Raimondo F, Nardini A (2001) Vulnerability to
cavitation of leaf minor veins: any impact on leaf gas exchange? Plant
Cell Environ 24: 851–859
Salleo S, Nardini A, Pitt F, Lo Gullo MA (2000) Xylem cavitation and
hydraulic control of stomatal conductance in laurel (Laurus nobilis L.).
Plant Cell Environ 23: 71–79
Sperry JS, Hacke UG, Oren R, Comstock JP (2002) Water deficits and
hydraulic limits to leaf water supply. Plant Cell Environ 25: 251–263
Sperry JS, Tyree MT (1988) Mechanism of water stress-induced xylem
embolism. Plant Physiol 88: 581–587
Tardieu F, Davies WJ (1993) Integration of hydraulic and chemical signalling
in the control of stomatal conductance and water status of droughted
plants. Plant Cell Environ 16: 341–349
Tyree MT, Cruiziat P, Benis M, Lo Gullo MA, Salleo S (1981) The kinetics
of rehydration of detached sunflower leaves from different initial water
deficits. Plant Cell Environ 4: 309–317
Tyree MT, Hammel HT (1972) The measurement of the turgor pressure and
the water relations of plants by the pressure-bomb technique. J Exp Bot
23: 267–282
Tyree MT, Patin˜ o S, Bennink J, Alexander J (1995) Dynamic measurements
of root hydraulic conductance using a high-pressure flowmeter in the
laboratory and field. J Exp Bot 46: 83–94
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catastrophic xylem dysfunction caused by dynamic water stress? Plant
Physiol 88: 574–580
Zwieniecki MA, Melcher PJ, Boyce CK, Sack L, Holbrook NM (2002)
Hydraulic architecture of leaf venation in Laurus nobilis L. Plant Cell
Environ 25: 1445–1450
Stomatal Closure and Correlated Physiological Traits
Plant Physiol. Vol. 132, 2003 2173" name="eprints.referencetext" />
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Correlation with Other Leaf Physiological Traits" name="DC.title" />
<meta content="Brodribb, Tim J." name="DC.creator" />
<meta content="Holbrook, N. M." name="DC.creator" />
<meta content="270402 Plant Physiology" name="DC.subject" />
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<meta content="The question as to what triggers stomatal closure during leaf desiccation remains controversial. This paper examines
characteristics of the vascular and photosynthetic functions of the leaf to determine which responds most similarly to
stomata during desiccation. Leaf hydraulic conductance (Kleaf) was measured from the relaxation kinetics of leaf water
potential (l), and a novel application of this technique allowed the response of Kleaf to l to be determined. These
“vulnerability curves” show that Kleaf is highly sensitive to l and that the response of stomatal conductance to l is closely
correlated with the response of Kleaf to l. The turgor loss point of leaves was also correlated with Kleaf and stomatal closure,
whereas the decline in PSII quantum yield during leaf drying occurred at a lower l than stomatal closure. These results
indicate that stomatal closure is primarily coordinated with Kleaf. However, the close proximity of l at initial stomatal
closure and initial loss of Kleaf suggest that partial loss of Kleaf might occur regularly, presumably necessitating repair of
embolisms." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Stomatal Closure during Leaf Dehydration, Correlation with Other Leaf Physiological Traits</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Brodribb, Tim J.</span> and <span class="person_name">Holbrook, N. M.</span> (2003) <xhtml:em>Stomatal Closure during Leaf Dehydration, Correlation with Other Leaf Physiological Traits.</xhtml:em> Plant Physiology, 132 (4). pp. 2166-2173. ISSN 0032-0889</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2600/1/stom__closure__PP.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2600/1/stom__closure__PP.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />546Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="3408" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1104/pp.103.023879">http://dx.doi.org/10.1104/pp.103.023879</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The question as to what triggers stomatal closure during leaf desiccation remains controversial. This paper examines
characteristics of the vascular and photosynthetic functions of the leaf to determine which responds most similarly to
stomata during desiccation. Leaf hydraulic conductance (Kleaf) was measured from the relaxation kinetics of leaf water
potential (l), and a novel application of this technique allowed the response of Kleaf to l to be determined. These
“vulnerability curves” show that Kleaf is highly sensitive to l and that the response of stomatal conductance to l is closely
correlated with the response of Kleaf to l. The turgor loss point of leaves was also correlated with Kleaf and stomatal closure,
whereas the decline in PSII quantum yield during leaf drying occurred at a lower l than stomatal closure. These results
indicate that stomatal closure is primarily coordinated with Kleaf. However, the close proximity of l at initial stomatal
closure and initial loss of Kleaf suggest that partial loss of Kleaf might occur regularly, presumably necessitating repair of
embolisms.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270402.html">270000 Biological Sciences > 270400 Botany > 270402 Plant Physiology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270400.html">270000 Biological Sciences > 270400 Botany</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2600</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Scholarly Publications Librarian</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">30 Nov 2007 15:34</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">11 Feb 2008 11:25</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2600;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2600">item control page</a></p>
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