Please use this identifier to cite or link to this item:
|Title:||Genders in Juniperus thurifera have different functional responses to variations in nutrient availability||Authors:||Montesinos, D.
|Issue Date:||Feb-2012||Serial title, monograph or event:||New Phytologist||Volume:||193||Issue:||3||Abstract:||• Differences in reproductive investment can trigger asymmetric, context-dependent, functional strategies between genders in dioecious species. However, little is known about the gender responses of dioecious species to nutrient availability. • We experimentally fertirrigated a set of male and female Juniperus thurifera trees monthly for 2 yr. Water potential, photosynthesis rate and stomatal conductance were measured monthly for 2 yr, while shoot nitrogen (N) concentration, carbon isotopic composition (δ(13) C), branch growth, trunk radial growth and reproductive investment per branch were measured yearly. • Control males had lower gas exchange rates and radial growth but greater reproductive investment and higher water use efficiency (WUE; as inferred from more positive δ(13) C values) than females. Fertirrigation did not affect water potential or WUE but genders responded differently to increased nutrient availability. The two genders similarly increased shoot N concentration when fertilized. The increase in shoot N was associated with increased photosynthesis in males but not in females, which presented consistently high photosynthetic rates across treatments. • Our results suggest that genders invest N surplus in different functions, with females presenting a long-term strategy by increasing N storage to compensate for massive reproductive masting events, while males seem to be more reactive to current nutrient availability, promoting gas-exchange capacity.||URI:||http://hdl.handle.net/10316/81137||ISSN:||1469-8137||DOI:||10.1111/j.1469-8137.2011.03982.x||Rights:||openAccess|
|Appears in Collections:||I&D CFE - Artigos em Revistas Internacionais|
Show full item record
Files in This Item:
|Montesinosetal2012JthuriferaPhysiologyNewPhytologist.pdf||Full text||444.58 kB||Adobe PDF||View/Open|
checked on May 29, 2020
WEB OF SCIENCETM
checked on Aug 2, 2022
checked on Oct 4, 2022
checked on Oct 4, 2022
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.