A global analysis of parenchyma tissue fractions in secondary xylem of seed plants.

A global analysis of parenchyma tissue fractions in secondary xylem of seed plants.
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DOI:
10.1111/nph.13737
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发表时间:
2016-03
期刊:
The New phytologist
影响因子:
--
通讯作者:
Jansen S
Jansen S
中科院分区:
其他
文献类型:
--
作者:
Morris H;Plavcová L;Cvecko P;Fichtler E;Gillingham MA;Martínez-Cabrera HI;McGlinn DJ;Wheeler E;Zheng J;Ziemińska K;Jansen S

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薄壁组织是种子植物次生木质部中的重要组织,具有从贮藏到防御的多种功能,并对木材的物理力学性质产生影响。目前,我们缺乏对射线薄壁组织(RP)和轴向薄壁组织(AP)组织部分的大规模定量分析。在这里,我们使用文献中关于AP和Rp组分的数据来研究气候和生长形式与总射线和轴向薄壁组织组分(RAP)的潜在关系。我们发现RAP组分的变化是29倍,这与温度的关系比与降水的关系更强。茎肉质植物的RAP值最高(平均为70.2±22.0%),其次为藤本植物(50.1±16.3%)、被子植物乔木和灌木(26.3±12.4%)、针叶树(7.6±22.6%)。温带和热带被子植物RAP组分的差异(分别为21.1%±77.9%和36.2%±113.4%)是由于AP组分的差异所致,AP组分在热带乔木中通常是温带乔木的3倍,而RP组分则不是。我们的结果表明,温度和生长形式都是RAP组分的重要驱动因素。这些发现应该有助于更好地理解RAP在植物中的各种功能。
Parenchyma is an important tissue in secondary xylem of seed plants, with functions ranging from storage to defence and with effects on the physical and mechanical properties of wood. Currently, we lack a large‐scale quantitative analysis of ray parenchyma (RP) and axial parenchyma (AP) tissue fractions. Here, we use data from the literature on AP and RP fractions to investigate the potential relationships of climate and growth form with total ray and axial parenchyma fractions (RAP). We found a 29‐fold variation in RAP fraction, which was more strongly related to temperature than with precipitation. Stem succulents had the highest RAP values (mean ± SD: 70.2 ± 22.0%), followed by lianas (50.1 ± 16.3%), angiosperm trees and shrubs (26.3 ± 12.4%), and conifers (7.6 ± 2.6%). Differences in RAP fraction between temperate and tropical angiosperm trees (21.1 ± 7.9% vs 36.2 ± 13.4%, respectively) are due to differences in the AP fraction, which is typically three times higher in tropical than in temperate trees, but not in RP fraction. Our results illustrate that both temperature and growth form are important drivers of RAP fractions. These findings should help pave the way to better understand the various functions of RAP in plants.
DOI: 10.1163/22941932-90000528
发表时间: 1990-01-01
期刊: IAWA BULLETIN
影响因子: --
作者:
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发表时间: 1970-01-01
期刊: HOLZFORSCHUNG
影响因子: 2.4
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发表时间: 1999-10-01
期刊: HOLZ ALS ROH-UND WERKSTOFF
影响因子: --
作者:
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