Early summer drought stress during the first growing year stimulates extra shoot growth in oak seedlings (Quercus petraea)
More severe summer droughts are predicted for mid-latitudes in Europe. To evaluate the impact on forest ecosystems and more specifically on forest regeneration, we studied the response to summer drought in oak seedlings (Quercus petraea). Acorns were collected from different mother trees in three st...
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| creator | Turcsan, Arion Steppe, Kathy Sarkoezi, Edit Erdelyi, Eva Missoorten, Marc Mees, Ghislain Mijnsbrugge, Kristine V |
| description | More severe summer droughts are predicted for mid-latitudes in Europe. To evaluate the impact on forest ecosystems and more specifically on forest regeneration, we studied the response to summer drought in oak seedlings (Quercus petraea). Acorns were collected from different mother trees in three stands in Belgium, sown in pots and grown in non-heated greenhouse conditions. We imposed drought on the seedlings in early summer by first watering the pots to saturation and then stopping any watering. Weight of the pots and stomatal conductance were regularly measured. Re-watering followed this drought period of 5 weeks. Height of the seedlings and apical bud development were observed. Stomatal resistance increased toward the end of the experiment in the drought-treated group and was restored after re-watering. The seedlings from the drought treatment displayed a higher probability to produce additional shoot growth after re-watering (p |
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To evaluate the impact on forest ecosystems and more specifically on forest regeneration, we studied the response to summer drought in oak seedlings (Quercus petraea). Acorns were collected from different mother trees in three stands in Belgium, sown in pots and grown in non-heated greenhouse conditions. We imposed drought on the seedlings in early summer by first watering the pots to saturation and then stopping any watering. Weight of the pots and stomatal conductance were regularly measured. Re-watering followed this drought period of 5 weeks. Height of the seedlings and apical bud development were observed. Stomatal resistance increased toward the end of the experiment in the drought-treated group and was restored after re-watering. The seedlings from the drought treatment displayed a higher probability to produce additional shoot growth after re-watering (p <= 0.05). A higher competition for water (two plants per pot) increased this chance. Although this chance was also higher for smaller seedlings, the actual length of the extra growth after re-watering was higher for larger seedlings (p <= 0.01). Both in the drought-treated and in the control group the autochthonous provenance growing on a xeric site produced less extra shoots compared to the two other provenances. Finally, stressed plants showed less developed apical buds compared to the control group after re-watering, suggesting a phenological effect on the growth cycle of oaks (p <= 0.0001). The higher chance for an extra shoot growth after the drought period can be considered as a compensation for the induced growth arrest during the drought period.</description><identifier>ISSN: 1664-462X</identifier><identifier>EISSN: 1664-462X</identifier><language>eng</language><subject>apical bud ; BEECH ; Biology and Life Sciences ; DOUGLAS-FIR ; drought ; FAGUS-SYLVATICA L ; linear mixed models ; MATT. 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To evaluate the impact on forest ecosystems and more specifically on forest regeneration, we studied the response to summer drought in oak seedlings (Quercus petraea). Acorns were collected from different mother trees in three stands in Belgium, sown in pots and grown in non-heated greenhouse conditions. We imposed drought on the seedlings in early summer by first watering the pots to saturation and then stopping any watering. Weight of the pots and stomatal conductance were regularly measured. Re-watering followed this drought period of 5 weeks. Height of the seedlings and apical bud development were observed. Stomatal resistance increased toward the end of the experiment in the drought-treated group and was restored after re-watering. The seedlings from the drought treatment displayed a higher probability to produce additional shoot growth after re-watering (p <= 0.05). A higher competition for water (two plants per pot) increased this chance. Although this chance was also higher for smaller seedlings, the actual length of the extra growth after re-watering was higher for larger seedlings (p <= 0.01). Both in the drought-treated and in the control group the autochthonous provenance growing on a xeric site produced less extra shoots compared to the two other provenances. Finally, stressed plants showed less developed apical buds compared to the control group after re-watering, suggesting a phenological effect on the growth cycle of oaks (p <= 0.0001). The higher chance for an extra shoot growth after the drought period can be considered as a compensation for the induced growth arrest during the drought period.</description><subject>apical bud</subject><subject>BEECH</subject><subject>Biology and Life Sciences</subject><subject>DOUGLAS-FIR</subject><subject>drought</subject><subject>FAGUS-SYLVATICA L</subject><subject>linear mixed models</subject><subject>MATT. LIEBL</subject><subject>MECHANISMS</subject><subject>oak seedling</subject><subject>re-watering</subject><subject>RESPONSES</subject><subject>ROBUR L</subject><subject>ROOT</subject><subject>shoot growth</subject><subject>TREE-GROWTH</subject><subject>WATER</subject><issn>1664-462X</issn><issn>1664-462X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>ADGLB</sourceid><recordid>eNqdi7FOw0AQRE8RSESQf9gSikjG2CapoyDaSCnoTht7c3dw9kW7e0D4ehwlBTXTzGjmzcRMH5ummldN-Xb1J9-Ymch7MaouiuXyeWp-1sjxCJL7nhg6Ttl5BVEmEegyh8GBeoJ9YFFwnL5OzZGQRyj0OaKSAH0rI4hP6cyohzBAwg8Qoi6OF4H7TSZus8CBRpjw4c5c7zEKzS5-a8qX9Xb1OneeBrUx7JhaVJswWOTWh0-y2Z2mHdlFXVZlXT_96_QLrVheVw</recordid><startdate>2016</startdate><enddate>2016</enddate><creator>Turcsan, Arion</creator><creator>Steppe, Kathy</creator><creator>Sarkoezi, Edit</creator><creator>Erdelyi, Eva</creator><creator>Missoorten, Marc</creator><creator>Mees, Ghislain</creator><creator>Mijnsbrugge, Kristine V</creator><scope>ADGLB</scope></search><sort><creationdate>2016</creationdate><title>Early summer drought stress during the first growing year stimulates extra shoot growth in oak seedlings (Quercus petraea)</title><author>Turcsan, Arion ; Steppe, Kathy ; Sarkoezi, Edit ; Erdelyi, Eva ; Missoorten, Marc ; Mees, Ghislain ; Mijnsbrugge, Kristine V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-ghent_librecat_oai_archive_ugent_be_85242553</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>apical bud</topic><topic>BEECH</topic><topic>Biology and Life Sciences</topic><topic>DOUGLAS-FIR</topic><topic>drought</topic><topic>FAGUS-SYLVATICA L</topic><topic>linear mixed models</topic><topic>MATT. LIEBL</topic><topic>MECHANISMS</topic><topic>oak seedling</topic><topic>re-watering</topic><topic>RESPONSES</topic><topic>ROBUR L</topic><topic>ROOT</topic><topic>shoot growth</topic><topic>TREE-GROWTH</topic><topic>WATER</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Turcsan, Arion</creatorcontrib><creatorcontrib>Steppe, Kathy</creatorcontrib><creatorcontrib>Sarkoezi, Edit</creatorcontrib><creatorcontrib>Erdelyi, Eva</creatorcontrib><creatorcontrib>Missoorten, Marc</creatorcontrib><creatorcontrib>Mees, Ghislain</creatorcontrib><creatorcontrib>Mijnsbrugge, Kristine V</creatorcontrib><collection>Ghent University Academic Bibliography</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Turcsan, Arion</au><au>Steppe, Kathy</au><au>Sarkoezi, Edit</au><au>Erdelyi, Eva</au><au>Missoorten, Marc</au><au>Mees, Ghislain</au><au>Mijnsbrugge, Kristine V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Early summer drought stress during the first growing year stimulates extra shoot growth in oak seedlings (Quercus petraea)</atitle><date>2016</date><risdate>2016</risdate><issn>1664-462X</issn><eissn>1664-462X</eissn><abstract>More severe summer droughts are predicted for mid-latitudes in Europe. To evaluate the impact on forest ecosystems and more specifically on forest regeneration, we studied the response to summer drought in oak seedlings (Quercus petraea). Acorns were collected from different mother trees in three stands in Belgium, sown in pots and grown in non-heated greenhouse conditions. We imposed drought on the seedlings in early summer by first watering the pots to saturation and then stopping any watering. Weight of the pots and stomatal conductance were regularly measured. Re-watering followed this drought period of 5 weeks. Height of the seedlings and apical bud development were observed. Stomatal resistance increased toward the end of the experiment in the drought-treated group and was restored after re-watering. The seedlings from the drought treatment displayed a higher probability to produce additional shoot growth after re-watering (p <= 0.05). A higher competition for water (two plants per pot) increased this chance. Although this chance was also higher for smaller seedlings, the actual length of the extra growth after re-watering was higher for larger seedlings (p <= 0.01). Both in the drought-treated and in the control group the autochthonous provenance growing on a xeric site produced less extra shoots compared to the two other provenances. Finally, stressed plants showed less developed apical buds compared to the control group after re-watering, suggesting a phenological effect on the growth cycle of oaks (p <= 0.0001). The higher chance for an extra shoot growth after the drought period can be considered as a compensation for the induced growth arrest during the drought period.</abstract><oa>free_for_read</oa></addata></record> |
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| source | Ghent University Academic Bibliography; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; PubMed Central; PubMed Central Open Access |
| subjects | apical bud BEECH Biology and Life Sciences DOUGLAS-FIR drought FAGUS-SYLVATICA L linear mixed models MATT. LIEBL MECHANISMS oak seedling re-watering RESPONSES ROBUR L ROOT shoot growth TREE-GROWTH WATER |
| title | Early summer drought stress during the first growing year stimulates extra shoot growth in oak seedlings (Quercus petraea) |
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